burgmann design manual 15-3

Mechanical SealsConventional and Gas-lubricatedfor Pumps, Compressors,Agitators and Similar Applications.Seal Supply Systemsand Components.

Des

ign

Man

ual

15.3

ServiceCenterOstAirparkMerseburgHans-Grade-Strae4D-06217MerseburgPhone+49/3461 /842920Telefax+49/3461 /842930

ServiceCenterRhein-MainImWinkel4D-67547WormsPhone+49/6241/932520Telefax+49/6241/932531

ServiceCenterRuhrAmPiekenbrocksbach8D-46238BottropPhone+49/2041/18851-50Telefax+49/2041/18851-70

EspeyBurgmannGmbHThomas-Edison-Str.19D-47445MoersPhone+49/2841/99827-0Telefax+49/99827-55

BurgmannAutomotiveGmbHBurgmannstrae1D-82547EurasburgPhone+49/8171/231510Telefax+49/8171/231530

BURGMANNinyourvicinity

GermanyKE-BurgmannU.K.EatonBank,CongletonGB-CheshireSW121NZPhone+44/1260/291289Telefax+44/1260/291303

GREECEA.G.Stambolidis&Co.Mitrodorou22GR-10441AthenPhone+30/21 /05150665Telefax+30/21 /05150810

HUNGARYBurgmannHungriaKft.Lejtutca6H-1124BudapestPhone+36/ 1 /3198131Telefax+36/ 1 /3198125

ITALYBurgmannItaliaS.R.L.ViaRovereto19-21I-20059Vimercate(Mi)Phone+390/39/6083941Telefax+390/39/6083940

BT-BurgmannS.P.A.ViaMeucci,58I-36057Arcugnano(Vi)Phone+390/444/288977Telefax+390/444/288693

NETHERLANDSBurgmannB.V.Kruisboog21bNL-3905TEVeenendaalPhone+31/318/542000Telefax+31/318/541535

NORWAYBurgmannNorgeA/SP.O.Box143Industriveien25DN-2021SkedsmokorsetPhone+47/64/837550Telefax+47/64/837575

POLANDKE-BurgmannPolskaSplkaz.o.o.Ul.Technikow40PL-02-468WarsawaTel.+48228631245Fax+48228631250

PORTUGALIndustraComerciodeEquipamentosIndustriais,Ltda.EstradadeAlbarraque5CentroEmpresarialSintra-EstorilBlocoA3,LinhoP-2710-297SintraPhone+351-21-9109500Telefax+351-21-9109599

ROMANIAVisandImpexS.R.L.Str.Apusuluinr.78,sector6RO-776231BucurestiPhone/Fax+40/21 /4344646

RUSSIAMoscowRepresentationUl.Novotcheremuschkinskaja61RF-117418MoskauPhone+7/095/797201 4Telefax+7/095/7972078

SLOVENIA(CRO,BIH,MAC,YU)BranchOfficeSloveniaMalciBeliceve37SLO-61000LjubljanaPhone+386/(0)1 /4231557Telefax+386/(0)1/2574057Mobile+386/(0)41 /661 315

SLOWAKIANREPUBLICBurgmanns.r.o.NaDrahach1364CZ-15600Praha5ZbraslavPhone+420/2/57920505Telefax+420/2/57920508

Technosams.r.o.Galvaniho2/ASK-82104BratislavaPhone+421/2/43413585Telefax+421/2/43413603

SPAINBurgmannIbricaS.A.PolgonoEurpolis,CalleX,1E-28230LasRozas,MadridPhone+34-91-7105630Telefax+34-91-6375798

SWEDENBurgmannSkandinavienABSvrmaregatan3S-60361NorrkpingPhone+46/ 11/ 140005Telefax+46/ 11/ 1 40015

SWITZERLANDBurgmannSchweizAGHofstrasse21 ,CH-8181HriPhone+41/ 1 /8608800Telefax+41/1 /8610135

INDIABurgmannIndiaPVT.LTD.A.K.IndustrialEstateMadinaManzilCompoundS.V.Road,Goregaon(West)Bombay400062Phone+91/22/8741534Telefax+91/22/8748810BranchOffices:Bangalore,Baroda,Chennay,Cochin,Delhi,Hyderabad,Kota,Panvel,Pune,Visakhapatnam,Mumbai,Surat.

KE-BurgmannFlexiblesIndiaPvt.Ltd.SurveyNo.1426NagappaIndustrialEstate, 194G.N.T.Road,PuzhalChennai600066,IndiaPhone+91/44/6590632Telefax+91/44/6590917

INDONESIAPTBurgmannIndonesiaJl.JababekaBlokJ6-EKawasanIndustriCikarangBekasi17550-JawaBaratPhone+62/21 /893531 3Telefax+62/21 /8935315Alsoresponsiblefor:Borneo,Java,Sulawesi,Sumatra

IRAKWTEUkbaSq.,Mahala929Zuhak2,HouseNo.5P.O.BoxNo.2421AlJadria,BaghdadPhone+96417199033Telefax+96417193034

IRANBurgmannParsSealingSystemsCo.3rdFloor,No.169betweenMofatehSt.&AmirAtabakSt.MotahariAve.Teheran,IranPhone+98/21/8742844Telefax+98/21/8742817

ISRAELAlsheichEng.Ltd.3,HametsudaStreetP.O.Box193Azur58001 ,IsraelPhone+972/3/5592747Telefax+972/3/5592740

JAPANBurgmannJapanOffice4thfloor,KbuildingKobunacho11-11NihonbashiChuokuTokyo103-0024JapanPhone+81/(0)3/5614-7291Telefax+81/(0)3/5614-7292

JORDANEmanEssaTradingEst.P.O.Box840067Amman11180-JordanPhone+96/279/5576692Telefax+96/265/665596

KOREABurgmannKoreaLtd.541 ,Suwolam-Ri, Seotan-MyonPyongtaek-Si,Kyongki-Do,-451-850-,PyongtaekYosuBusanDaeguKoreaPhone+82/31 /664-4095Telefax+82/31/664-4094BranchOffices:Ulsan,Seoul

KUWAITDanTrading&ContractingCo.W.L.L.P.O.Box509213051Safat,KuwaitPhone+965/2432553Telefax+965/2437833

MALAYSIABurgmannMalaysiaSDNBHDNo.7,LorongSS13,6BOffJalanSS13/6SubangJayaIndustrialEstate47500PetalingJayaPhone+60/3/56348624Telefax+60/3/56349742BranchOffices:JojorBahru,Kuantan,Bukit,Selangor

MEXICOBurgmannMexicoS.A.deC.V.CalzadadeGuadalupeNum.350-6,Col.ElCerritoC.P.54720,CuautitlnIzcalli,EstadodeMxico,MexicoCityPhone+52/55/58725393Telefax+52/55/58726493BranchOffices:Tampico,Monterrey,Queretaro,Villahermosa,Puebla,Guadalajara,Toluca,Orizaba,Celaya,Coatzacoalcos,Colima,Metepec

MOROCCOPetro-MatAngleRueMicheldel'HpitaletRueJulesCesarCasablanca05Phone+212/240/8799Telefax+212/240/ 1939

MYANMAROneCo.Ltd.No.22,7Mile,PyayRd.,MayangoneTownshipYangon,MyanmarPhone+951244969Telefax+951650469

NEWZEALANDBurgmannSealsNewZealandUnitF14ClemwayPlaceHenderson,AucklandPhone+64/9/8368215Telefax+64/9/8361763

NIGERIASealingEngineeringServicesLtd.82St.Finbarr'sCollegeRoadAkoka/Yaba,LagosPhone+234/ 1 /825909Telefax+234/ 1 /825909

OMANOverseasPetroleumEquipmentCo.L.L.C.P.O.Box261 ,HamriyaPostalCode131 ,SultanateofOmanPhone+968/602182Telefax+968/602084

PAKISTANAzifAsimAssociatesSuit#02,1stFloor,SameerplazaCivicCenter,3-C1FaisalTown54660Lahore,PakistanTel.+92/42/111585Fax+92/42/5168344

PERUCorporacinGammaS.A.C.Av.LaMarina1321 ,SanMiguelLima-PeruPhone+51/12/637670Telefax+51/ 12/630286

PHILIPPINESBurgmann(Philippines)Inc.No.9769NationalRoad,MaduyaCarmona,CavitePhone+63/49/8390655Telefax+63/49/8390654BranchOffices:Cebu,CagayandeOro,Bacolod,Darao

QATARJaidahMotorsandTradingCo.P.O.Box150Doha/Qatar/ArabianGulfPhone+974/682182Telefax+974/414100

SAUDIARABIAGasArabianServicesP.O.Box3422Dammam31471 ,SaudiArabiaPhone+96/63/8268465Telefax+96/63/8276083

BurgmannKingdomofSaudiArabiaKhaldijahArea-PortRoadWorkshop#4Dammam,SaudiArabiaPhone+96/63/8599009Telefax+96/63/8599229

SINGAPOREKE-BurgmannSingaporePte.Ltd.Blk7PioneerRoadNorthNo.01-51 ,Singapore628459Phone+65/2618581Telefax+65/2618589

SOUTHAFRICAEagleBurgmannSealsSouthAfrica(PTY.)LTD.1BruntonCircleFoundersViewSouth,ModderfonteinJohannesburg2065,Gauteng,R.S.A.Phone+27/11 /4579000Telefax+27/11 /6091606Postaladress:P.O.Box1210,Edenvale1610,R.S.A.BranchOffices:Durban,CapeTown,PortElisabeth,Richardsbay,Secunda,SasolburgAlsoresponsiblefor:Namibia,Botswana,Swaziland,Zambia,Zimbabwe,Mozambique,Mauritius,Congo,Ethiopia,Uganda,Tanzania

TAIWANFriendlyTradingCo.,Inc.11Fl.-1 ,No.1PaoSenRoadYongHoCity,TaipeiHsienTaiwan/R.O.C.Phone+886/22/9279070Telefax+886/22/9279377

THAILANDBurgmannThailandCo.Ltd.BangaTowerC,Floor18th40/14Moo12Banga-TradRd.Km.6.5Bangkaew,BangpleeSamutprakarn10540Tel.+66/2/7519621Fax+66/2/7519628BranchOffices:Khonkaen,Suratthani,Rayongfactory,Ratchaburi,Chaingmai

TRINIDADEswilEquipment&Supply(W.I.)Ltd10-16LadyHailesAvenueSanFernando,Trinidad,W.I.P.O.Box3585,LaRomaineTinidad,W.I.Phone+1/868/6578838Telefax+1/868/6529002

TUNISIAFazeServices28,Rue8714citolympique1003TunisTunisiaPhone+216/ 1 /771055Telefax+216/ 1 /772235

TURKEYEagleBurgmannEndstryielSzdrmazlkSan.VeTic.Ltd.Sti.S.S.stanbulKimyaSanayicilerTopluyeriYapKooperatifiEBlokNo.4TR-81720Teperen-Tuzla/IstanbulPhone+90/216/5930293Telefax+90/21 6/5930298BranchOffice:Adana,IzmirAlsoresposiblefor:Syrien

UNITEDARABEMIRATESBurgmannMiddleEastP.O.Box61 310JebelAliFreeZoneDubai/U.A.E.Phone+971 /4/8838841Telefax+971 /4/8838843

URUGUAYBilpaS.A.CasillaCorreo889CdigoPostal11800SantaF,1 . 131-Montevido-UYUruguayPhone+598/2/293343Telefax+598/2/290687

USAEagleBurgmannIndustriesLP10035BrookriverDr.Houston,Texas77040Phone+1/713/9399515Telefax+1/713/9399091BranchOffices:NorthCarolina,Louisiana,California,NewJersey

KE-BurgmannUSA1589ProductionDriveSuiteABurlington,KY41005Phone+1/606/7460091Telefax+1/606/7460094

VENEZUELABurgmanndeVenezuelaC.A.Calle6contraCalle9EdificioFant,Piso2,LaUrbinaCaracas,Dtto.Sucre,1073Edo.Miranda,VenezuelaPhone+58/21 2/2421548Telefax+58/212/2424544BranchOffices:Maturin,PuertodelaCruz,PuntoFijo,Valencia

VIETNAMBavicoLtd.97ALyTuTrongStreet,District1HoChiMinhCity,VietnamPhone+84/8/8243046Telefax+84/8/8223582

Kundenbetreuungs-CenterNord/WerksbroBremenSinstorferKirchweg74- 92D-21 077HamburgPhone+49/421/562375Telefax+49/421/563396

Kundenbetreuungs-CenterOst/WerksbroCottbusAirparkMerseburgHans-Grade-Strae4D-06217MerseburgPhone+49/35608/4 09 85Fax+49/35608/4 0839

WerksbroFrankfurtDiezerStrasse108D-65549Limburg/LahnPhone+49/6431 /92299Telefax+49/6431 /92298

Kundenbetreuungs-CenterSdwest/WerksbroFreiburgKarlstrae82D-72138KirchentellinsfurtPhone+49/7121/678493Fax+49/7121/963044

Kundenbetreuungs-CenterNORD/WerksbroHamburgSinstorferKirchweg74-92D-21077HamburgPhone+49/40/76104633Telefax+49/40/76104621

Kundenbetreuungs-CenterKln/WerksbroKlnGewerbegebietRheinbogenVorgebirgsstr.27D-50389WesselingPhone+49/2236/38330Telefax+49/2236/383320

Kundenbetreuungs-CenterOst/WerksbroLeipzigAirparkMerseburgHans-Grade-Strae4D-06217MerseburgPhone+49/3461 /842910Telefax+49/3461 /842930

WerksbroMnchenPostfach1240D-82502WolfratshausenPhone+49/8171/231271Telefax+49/8171/231049

WerksbroNrnbergRiedckerweg2D-90765Frth-StadelnPhone+49/911/7670087Telefax+49/91 1/767623

Kundenbetreuungs-CenterNord/WerksbroOldenburgRudolf-Bultmann-Strasse7D-26129OldenburgPhone+49/441/54639Telefax+49/441/55428

WerksbroRegensburgSteinweg1D-93059RegensburgPhone+49/941/88827Telefax+49/941/88732

Kundenbetreuungs-CenterRuhr/WerksbroRuhrAmPiekenbrocksbach8D-46238BottropPhone+49/2041/18851-14Telefax+49/2041/18851-20

Kundenbetreuungs-CenterSdwest/WerksbroStuttgartKarlstrae82D-72138KirchentellinsfurtPhone+49/7121 /963043Telefax+49/7121 /963044

Kundenbetreuungs-CenterWorms/WerksbroWormsImWinkel4D-67547WormsPhone+49/6241/93250Telefax+49/6241/932530

ServiceCenterBayernBurgmannstr.1D-82547EurasburgPhone+49/8171 /231737Telefax+49/81 71 /231663

ServiceCenterKlnGewerbegebietRheinbogenVorgebirgsstr.27D-50389WesselingPhone+49/2236/383350Telefax+49/2236/383370

ServiceCenterMarlGeb.1192,PB14Paul-Baumann-Str.1D-45764MarlPhone+49/2365/4986164Telefax+49/2365/4986160

ServiceCenterNordSinstorferKirchweg74-92D-21077HamburgPhone+49/40/76104644Telefax+49/40/76104641

ARGENTINAChilicoteS.A.Avda.JulioA.Roca546C1067ABNBuenosAires,ArgentinaPhone+54/11/43438469Telefax+54/11/43314278

AUSTRALIABurgmannSealsAustraliaPty.Ltd.16StennettRoad,Ingleburn,NSW2565Phone+61/2/96056444Telefax+61/2/98296958BranchOffices:Adelaide,Gladstone,Perth,Brisbane,Melbourne,Townsville

BRAZILBurgmanndoBrasilVedaoesIndustriaisLtda.Av.Sta.Izabel,1721CEP-13084-643BaraoGeraldoCaixaPostal6560Campinas-SaoPauloPhone+55/ 19/37499740Telefax+55/ 19/37499742BranchOffices:Jaboticabal,RiodeJaneiro,SaoPaulo,Recife,LaurodeFreitas,Bel-Horizonte,PortoAlegre,Maca,Fortaleza-Cear

BRUNEINautikaGobilCorrosionEng.KualaBelait6008BruneiDarussalamPhone+673/3/332759Telefax+673/3/332279

CANADATG-BurgmannLtd.3225MainwayDriveBurlington,OntarioCanadaL7M1A6Phone+1/905/3351440Telefax+1/905/3354033

NovaMagnetics-BurgmannLtd.OneResearchDriveDartmouth,NovaScotiaCanadaB2Y4M9Phone+1/902/4656625Telefax+1/902/4656629

CHILESelloTecnoLtda.LaGioconda4233,Of.71LasCondesRegionMetropolitanaSantiago,ChilePhone+56/2/3263808Telefax+56/2/2086165

CHINABurgmannShanghaiLtd.No.127-8WenjingRoadMinhang,ShanghaiPeople'sRepublicofChinaPhone+86/21 /64620550Telefax+86/21 /64300219BranchOffices:ShanghaiCity,Nanjing,Shijizhuang,Changchun,Shenyang,Tianjin,Lanzhou,Hangzhou,Guangzhou,HongKongPingdingshan,Zhenzhou,Beijing,Kunming,GuiYang,Wuhan,TaiYuan,Zhuhai,Xiamen

BurgmannDalianLtd.No.278CujinRoadGanjingziDistrict,DalianPeople'sRepublicofChinaPhone+86/411 /6650100Telefax+86/411 /6641901BranchOffices:Beijing,Lanzhou,TaiYuan,Urumchi,Shenzen

Burgmann(Shanghai)EngineeringSealingCo.LtdRoom1704YiinxiaoBuildingA6259HuminRd.Minhang201 100Shanghai,ChinaPhone+862164134350Telefax+862164140728

COLOMBIAInversionesyRepresentacionesTobnVelezCr.7-64-50-Ext .301SantafdeBogotaPhone+57/1/2117675Telefax+57/1/2117675

ECUADORPetroconsultantS.A.Fco.deGoya262Urb.LosCipressesIIElCondadoP.O.Box17-17-1254QuitoPhone+593/2/491752Telefax+593/2/493509

EGYPTAlimex160AhmedShawkySt.El-MaimaryTowersAppt.82BRoushdy,AlexandriaPhone+20/3/5464876Telefax+20/3/5468175Brachoffices:Cairo

Alltechnicalspecificationsarebasedonextensivetestsandourmanyyearsofexperience.Thediversityofpossibleapplicationsmeans,however,thattheycanserveonlyasguidevalues.Wemustbenotifiedoftheexactconditionsofapplicationbeforewecanprovideanyguaranteeforaspecificcase.Subjecttochange.

OutsideEurope

30.11.2004

Europe

AUSTRIABurgmannAustriaDichtungstechnikGmbHBerchtesgadnerStrasse36A-5020SalzburgPhone+43/662/825701Telefax+43/662/825703

BELGIUMBurgmannB.V.B.A.Zagerijstraat1 1B-2960Sint-Job-in't-GoorPhone+32/3/6339944Telefax+32/3/6339949

BULGARIAKonstantin&SonsYantraStr.13aBG-SofiaPhone+359/2/9434190Telefax+359/2/9434199

CZECHREPUBLICBurgmanns.r.o.NaDrahach1364CZ-15600Praha5ZbraslavPhone+420/2/57920505Telefax+420/2/57920508

KE-BurgmannCzechs.r.o.VLznich395CZ-25401JiloveuPrahyTel.+420/2/41021811Fax+420/2/41021830

DENMARKKE-BurgmannA/SExpansionJointsDivisionParkAll34DK-6600VejenPhone+45/75361811Telefax+45/75361532

KE-BurgmannA/SSealsDivisionIndustrisvinget1DK-6600VejenPhone+45/75364988Telefax+45/75363988

KE-BurgmannBredanA/SOdinsvej1,Box1 29DK-6950RingkobingPhone+45/96742800Telefax+45/97323631

FINLANDKE-BurgmannFinlandOyExpansionJointsP.O.Box139EnsimminenSavuSF-01510VantaaPhone+358/9/825501Telefax+358/9/82550200

TiivistetekniikkaOyMkituvantie5SF-01510VantaaPhone+358/20765171Telefax+359/207652007

FRANCEBurgmannS.A.S.ZonedActivitlesPerriers1 06/108RoutedeCormeillesBP96F-78505SartrouvillePhone+33/1 /30865020Telefax+33/ 1 /39151607BranchOffices:Lyon,Schiltigheim,LeHavre,Marseille

GREATBRITAINEagleBurgmannIndustriesUKLP12,WeltonRoadWedgnockIndustrialEstateGB-WarwickCV345PZPhone+44/ 1926/417600Telefax+44/ 1926/417617

BurgmannIndustriesGmbH&Co.KGuereSauerlacherStr.610D-82515WolfratshausenPhone+49 (0) 8171/ 23-0Telefax+49 (0) 8171 / 231214www.burgmann.com

The worldwideAlliance for Sealing Technology

Contents

The BurgmannDesign Manual forMechanical Seals is now available in theInternet.At www.burgmann.comyou will not only find all the main seals covered by this catalogue but also the CASS Seal Selection Program and a great deal more besides.

Important Note:All the technical references are based onextensive tests and our many years ofexperience. The diversity of possibleapplications means, that they can serveas guide values only. No guarantee canbe given for a specific case unless theexact conditions of application are knowto use and confirmed in a special agree-ment. For particularly critical conditionsof operation, e. g. involving a mixture ofproducts, we recommend you consultwith our specialist engineers. It should benoted that the maximum values of eachoperating parameter cannot be applied atthe same time. Subject to change.

Table of Materialssee inside back cover.

2 Alpha-numericalProduct Indexlisting all the mechanical seals in this catalogue and a

Keyword Index

1B u r g m a n n M e c h a n i c a l S e a l s D e s i g n M a n u a l 1 5 . 3

Contents3 Seal Selection

by Media

25 Mechanical Sealsfor Pumps andCompressors

65 Gas-lubricatedMechanical Seals for Pumps,Mixers, CompressorsGas Supply Systems

81 Mechanical Seals for Agitators, Mixersand Reactors

91 Supply Systemsand Componentsfor liquid-lubricatedMechanical Seals

111 Case Examplesand Recommendationsfor Applications

135 Notes on Design,Installation and Operation

Index

2 B u r g m a n n M e c h a n i c a l S e a l s D e s i g n M a n u a l 1 5 . 3

M78N . . . . . . . . . . . . . . . . . 30, 31M7F . . . . . . . . . . . . . . . . . . . . . 31M7N . . . . . 30, 118, 132, 129, 139M7N/H7N . . . . . . . . . . . . . . 32, 48M7N/M7N . . . . . . . . . . . . . . 32, 48M7S2 . . . . . . . . . . . . . . . . . . . . 31MAA . . . . . . . . . . . . . . . . . 93, 108MAF . . . . . . . . . . . . . . . . . 93, 108MF95N . . . . . . . . . . . . . . . . . . . 39MFL65 . . . . . . . . . . . . . 63, 121,122MFL85F . . . . . . . . . . . . . . . . . . 40MFL85GS . . . . . . . . . . . . 40, 67, 72MFL85N . . 40, 119, 122, 129, 130MFLC-GS . . . . . . . . . . . . . . . . . 120MFLCT80 . . . . . . . . . . . . . . . 40, 41MFLW80... . . . . . . . . . . . . 121, 129MFLW85S20 . . . . . . . . . . . . . . .120MFLWT80 40, 41, 120, 121, 122, 141MG/M3 . . . . . . . . . . . . . . . . . . 130MG1 .36, 37, 123, 124, 130, 131, 133MG12 . . . . . . . . . . . . . . . . . . . . 36MG13 . . . . . . . . . . . . . . . . . . . . 37MG1-45/G6 . . . . . . . . . . . . . . . 119MG1-G6 . . . . . . . . . . . . . . . . . . 133MG1S20 . . . . . . . . . . . . . . . . . . 37MG1S5 . . . . . . . . . . . . . . . . . . 129MG9... . . . . . . . . . . . . . . . . . . . . 34MR..(L)-D . . . . . . . . . . . . . . . . . 86MR33(L)-D . . . . . . . . . . . . 87, 134MR33S1-D . . . . . . . . . . . . . . . . 134MR5LF-D . . . . . . . . . . . . . . . . . . 87MR-D . . . . . . . . . . . . . . . . 86, 133MRF-D17/65 . . . . . . . . . . . . . . 119Mtex-QN,-TN,-QNM,-TNM,-DN 58, 59Mtex-GSD . . . . . . . . . . . . . . . . . 72PDGS . . . . . . . . . . . . . . . . 78, 115QFT1000 . . . . . . . . . . . 94, 95, 127RGS-D1/143 . . . . . . . . . . . . . . . 121RMG12 . . . . . . . . . . . . . . . . . . . 37S14/48 . . . . . . . . . . . . . . . . . . 116S2/245 . . . . . . . . . . . . . . . . . . 116Bulk head 3200 . . . . . . . . . . . . 132SH . . . . . . . . 60, 61, 112, 113, 114 SH-D . . . . . . . . . . . . . . . . . 61, 112SHF . . . . . . . . . . . . . . 60, 124, 126SHFV3/125 . . . . . . . . . . . . . . . . 126SHFV-D . . . . . . . . . . . . . . . 60, 121SHJ92GS4 . . . . . . . . . . . . . . . . 134SHJ97(7)G . . . . . . . . . . . . 43, 134SHPV . . . . . . . . . . . . . . . . 60, 126SHR . . . . . . . . . . . . . . . . . . . . . 52SHV . . . . . . . . . . . . 112, 126, 127SHV-D . . . . . . . . . . . . . . . . . . . 112SMS . . . . . . . . . . . . . . . . . . . . . 79SP 23 ... . . . . . . . . . . . . . . 93, 102SPA . . . . . . . . . . 93, 109, 117, 121SPI . . . . . . . . . . . . . . . . . . 93, 103SPK . . . . . . . . . . . . . . . . . 93, 103SPL . . . . . . . . . . . . . . . . . 93, 103SPN . . . . 93, 102, 104, 114, 117SPS . . . . . . . . . . . . . . 93, 94, 103SPU . . . . . . . . . . . . . . . . . 93, 102STD1 . . . . . . . . . . . . . . . . . . . . . 90Stern tube seal 4600 . . . . . . . . 132TDGS . . . . . . . . . . . . . . . . . . . . . 78TS1000/1016 . . . . . . . . . . . . 93, 96TS2000/2001/2063 . . . 93, 97, 119TS3000/3004/3007/3016 . . . 93, 99TS6050 . . . . . . . . . . . . . . . 93, 100VGM . . . . . . . . . . . . . . . . . . . . 123VTE . . . . . . . . . . . . . . . . . 93, 110WDK . . . . . . . . . . . . . . . . 93, 105WED . . . . . . . . . . . . . 93, 127, 106WEL . . . . . . . . . . . . . . . . . 93, 106ZY . . . . . . . . . . . . . . 93, 107, 123

Agglomerator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134Agitator bead mill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119Ammonia compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . .115API 610 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93, 137, 144API 682 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100, 120, 122Axial runout tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . .141Bottom entry drive . . . . . . . . . . . . . . . . . . . . . . . . . . .89, 119Buffer fluid systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92Buffer fluid unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109Buffer medium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93Calander . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129Chemicals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118Circuit, open and closed . . . . . . . . . . . . . . . . . . . . . . . . . . .92Circulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92Circulation systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93Clamping set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90, 142Coal feed screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117Coal gasification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117Coal mining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Code for agitator seals . . . . . . . . . . . . . . . . . . . . . . . . . . . .90Code system EN 12756 (DIN 24960) . . . . . . . . . . . . . . . .136Coefficient of friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Coking oven gas compressor . . . . . . . . . . . . . . . . . . . . . . .115Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76, 77, 115Concentricity tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . .141Condensate generation . . . . . . . . . . . . . . . . . . . . . . . . . . . .99Conical spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Contact unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103Cooling coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Cooling flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90Cooling water consumption . . . . . . . . . . . . . . . . . . . . . . . .138Cutter head seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Cyclone separator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107DIN ISO 5199 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95Distributor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110Double balanced . . . . . . . . . . . . . . . . . . . . . . . . . . .55, 57, 59Drive key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Elastomer bellows . . . . . . . . . . . . . . . . . . . . . . . . . . . .34, 36Elastomer-free mechanical seal . . . . . . . . . . . . . . . . . . .72, 78External pressurization . . . . . . . . . . . . . . . . . . . . . . . . . . .139Extrusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141Filter dryer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134Flash turbines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115Flow metex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102Flue gas desulphurization . . . . . . . . . . . . . . . . . . . . . . . . .127Fluid quench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92Gap width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Gas groove shapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66Gas quench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92Gas separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68Gas supply system . . . . . . . . .60, 63, 66, 67, 74, 79, 121, 144Glass lined vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84Guide sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55Heat dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . .105, 106, 107Hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . .141Jacket cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139Leakage drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90Level indicator, switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .103Load factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Low-emission seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47Magnet filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108Metal bellows . . . . . . . . . . . . . . . . . . . . . . .40, 58, 63, 72, 78Mineral oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112, 114Multiphase technology . . . . . . . . . . . . . . . . . . . . . . . . . . .112Multipoint injection . . . . . . . . . . . . . . . . . . . . . . . . . . .58, 114Offshore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112Oil-lubricated mechanical seals . . . . . . . . . . . . . . . . . .61, 115Onshore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114Paper industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128Pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114, 123Polymerization buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90Polypropylene reactor . . . . . . . . . . . . . . . . . . . . . . . . . . . .119Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Power consumption due to friction . . . . . . . . . . . . . . . . . . .139Power stations . . . . . . . . . . . . . . . . . . . . . . . . . .60, 126, 127Pressure booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102, 103Pressure retention unit, control unit . . . . . . . . . . . . . . . . . .110Pressure vessel regulations . . . . . . . . . . . . . . . . . . . . . . . .142Pulp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128Pulper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129Pulpwood grinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128Pump, ammonia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119Pump, aseptic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134Pump, boiler water circulating . . . . . . . . . . . . . . . . . . .60, 126Pump, boiler water feed (booster) . . . . . . . . . . . . . . . .60, 126Pump, condensate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126Pump, cooling water . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132Pump, crude oil loading . . . . . . . . . . . . . . . . . . . . . . . . . .114Pump, dishwasher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38Pump, drinking water . . . . . . . . . . . . . . . . . . . . . . . . . . . .123Pump, eccentric screw . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Pump, feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60, 126Pump, flume water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133Pump, gas oil service . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Pump, gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118Pump, GLP delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Pump, home and garden . . . . . . . . . . . . . . . . . . . . . . . .26, 38Pump, hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Pump, juice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133Pump, lubricating oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132Pump, main delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113Pump, main feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126Pump, multiphase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112Pump, nitrogen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Pump, non-clogging . . . . . . . . . . . . . . . . . . . . . . . . .130, 131Pump, pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114Pump, plastic centrifugal . . . . . . . . . . . . . . . . . . . . . . . . . .119Pump, pot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Pump, pulp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129Pump, quench oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Pump, raw sludge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130Pump, refill hand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102Pump, residual oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Pump, return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Pump, screw . . . . . . . . . . . . . . . . . . .105, 112, 119, 121, 132Pump, standard centrifugal . . . . . . . . . . . . . . . . . . . . . . . .119Pump, standard chemical . . . . . . . . . . . . . . . . . . . . . . . . .118Pump, submersible-motor . . . . . . . . . . . . . . . . . . . . . . . . .131Pump, sulfolan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Pump, washing suspension, centrifugal . . . . . . . . . . . . . . .127Pump, water injection . . . . . . . . . . . . . . . . . . . . . . . .113, 114Pumping screw . . . . . . . . . . . . . . . . . . . . . . . . . . .49, 60, 140Quarrying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Quench (installation) . . . . . . . . . . . . . . . . . . . . . . . . . .5, 93Quench fluid tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94Radial clearance seal . . . . . . . . . . . . . . . . . . . . . . . . . .76, 79Refill unit, automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104Refill unit, mobile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Refiner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128Refinery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Residue combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118Roller bellows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39Roller head sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Rotary joint for water . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Roughness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Safety seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69Screw agitator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133Screw compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115Screw locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141Seal supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92Sealing system with no cooling . . . . . . . . . . . . . . . . . . . . .125Seat cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124, 125Seat locking to EN 12756 (DIN 24960) . . . . . . . . . . . . . . .137Seat, hydraulically balanced . . . . . . . . . . . . . . . . . . . . . . . .89Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27, 28, 36, 40, 46Seawater desalination . . . . . . . . . . . . . . . . . . . . . . . . . . . .123Sewage works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132Shrink disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90, 142Shut-down seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90Siding pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Sliding velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Snap locator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Soiled and sea water . . . . . . . . . . . . . . . . . . . . . . . . . . . .112Special waste incineration . . . . . . . . . . . . . . . . . . . . . . . . .130Split mechanical seal . . . . . . . . . . . . . . . . . . . . . . . . .50, 123Spring protection sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . .54Spring, product-protected . . . . . . . . . . . . . . . . . . . . . . . . . .42Spring, Super-Sinus . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139Steam quench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92Sterile process . . . . . . . . . . . . . . . . . . . . .43, 52, 88, 99, 134Submersible aerator . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130Submersible motor agitator . . . . . . . . . . . . . . . . . . . . . . . .131Sugar industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133Supply connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90Surface finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141Swimming-pool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136Table of materials . . . . . . . . . . . . . . . . . . . . . .Back cover flapTandem arrangement . . . . . . . . . . . . . . . . . . . . . . . . .127, 131Tank agitator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127Thermosiphon vessel, system . . . . . . . . . . .96, 97, 98, 99, 100Threaded pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Top entry drive . . . . . . . . . . . . . . . . . . . . . . . . .82, 84, 88, 89Torque transmission, drive . . . . . . . . . . . . . . . . . . .46, 90, 142TTV O-rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Turbo compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115Turbulence losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Turbulent mixing reactor . . . . . . . . . . . . . . . . . . . . . . . . . .119Vapour pressure curves . . . . . . . . . . . . . . . . . . . . . . . . . . .140Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Waste water systems . . . . . . . . . . . . . . . . . . . . . . . .130, 131

Product Index Keyword Index

AGS . . . . . . . . . . . . . . . 67, 74,117AGS461... . . . . . . . . . . . . 74, 75, 84AGS481... . . . . . . . . . . . . . . . 74, 82AGSR . . . . . . . . . . . . 67, 74, 75, 86Cartex-GSD . . . . . . . 56, 67, 70, 121Cartex-SN,-SNO,-QN/TN,-DN,-HDN . . . . . . . . . . . . . . . . . . . . . . . 56, 57

CGS-(K)D . . . . . . . . . . . 67, 69, 119CGS-KN . . . . . . . . . . . . . . . . 68, 69CSR . . . . . . . . . . . . . . . . . . . 69, 79DGS . . . . . . . . . . . . . . . 67, 76, 115DHE . . . . . . . . . . . . . 93, 110, 117DRE . . . . . . . . . . . . . . . . . 93, 110DRU . . . . . . . . . . . . . . . . . 93, 101GSO-D . . . . . . . . . . . . . . . . . 67, 71GSS . . . . . . . . . . . . 67, 74, 121, 119H127G115 . . . . . . . . . . . . . . . . . 44H12N . . . . . . . . . . . . . . . . . . . . 44H17GN . . . . . . . . . . . . . . . 44, 123H427GS1/35 . . . . . . . . . . . . . . 116H74(F)-D . . . 48, 49, 118, 124, 127H74F . . . . . . . . . . . . . . . . . . . . 140H74F1 . . . . . . . . . . . . . . . . . . . 125H74G15 . . . . . . . . . . . . . . . . . . 125H75 . . . . . . . . . . 47, 112, 122, 124H75-D . . . . . . . . . . . . . . . . . . . 112H75F . . . . . . . . . . . . . . . . . 47, 124H75G115 . . . . . . . . . . . . . . . . . 124H75G15 . . . . . . . . . . . . . . . . . . . 46H75K . . . . . . . . . . . . . . . . . . . . . 69H75K/H75F . . . . . . . . . . . . . . . 122H75N . . . . . . . . . . . . . . . . . . . . . 46H75N/H75F1 . . . . . . . . . . . . . . 127H75S2/H75F1 / F2 . . . . . . . . . . 120H75S2/U5-H75F2/55 . . . . . . . . 122H75VN . . . . . . . . . . . . . . . . 47, 69H76(N) . . . . . . . . . . . . . . . . 46, 47H7F . . . . . . . . . . . . . . . . . . 47, 124H7(N) . . . . . . . . . . . . 46, 124, 139H7N/H7F3 . . . . . . . . . . . . . . . . 120H7N/H7N . . . . . . . . . . . . . . . 32, 48H7S2 . . . . . . . . . . . . . . . . . . . . 125H8 . . . . . . . . . . . . . . . . . . . . . . . 64H10 . . . . . . . . . . . . . . . . . . . . . . 64HF(V) . . . . . . . . . . . . . . . . . . . . 124HF-D/93 . . . . . . . . . . . . . . . . . . 114HFV-D4/120 . . . . . . . . . . . . . . .113HGH . . . . . . . . . . . 50, 51, 123, 132HJ42 . . . . . . . . . . . . . . . . . . . . . .43HJ927GN . . . . . . . . . . . . . . . . . . 42HJ92N . . . . . . . . . . . . . . . . . . . 42HJ977GN . . . . . . 42, 129, 130, 133HJ97G . . . . . . . . . . . . . . . . . . . . 42HPS . . . . . . . . . . . . . . . . . 93, 105HR . . . . 52, 53, 127, 128, 129, 130HRC . . . . . . . . . . . . . . 54, 55, 118HRC-GS3000N . . . . . . . 54, 67, 118HRGS-D . . . . . . . . . . . . . . . . . . . 73HRGS-DC . . . . . . . . . . . . . . . . . . 73HRGS-DD . . . . . . . . . . . . . . . . . . 73HRK-D . . . . . . . . . . . . . . . . . . . . 53HRLS1/80 . . . . . . . . . . . . . . . . . 127HRN . . . . . . . . . . . . . . . . . . . . . 62HRSV-D201/254 . . . . . . . . . . . . 116HRZ/MG1 . . . . . . . . . . . . . . . . 133HRZ1 . . . . . . . . . . . . . . . . . . . . 52HS...(L)-D . . . . . . . . . . . . . 88, 139HSH(V)(L)-D . . . . . . . . . . . . . . . 89HSH2/215 . . . . . . . . . . . . . . . . 115HSH-D . . . . . . . . . . . . 89, 117, 128HSHF1 . . . . . . . . . . . . . . . 121, 124HSHFB . . . . . . . . . . . . . . . . . . . 126HSHLU-D . . . . . . . . . . . . . . 89, 117HSHU-D . . . . . . . . . . . . . . . 89, 119HSHV . . . . . . . . . . . . . . . . . . . . 123HSMR..(L)-D . . . . . . . . . . . 86, 134HSSHRS8-D . . . . . . . . . . . . . . . 128HST1/119-TA2 . . . . . . . . . . . . . . 113HTS . . . . . . . . . . . . . . . . . . . . . 125LP(-D) . . . . . . . . . . . . . . . . . . . 129M2N . . . . . . . . . . . . . . . . . . . . . 27M3 . . . . . . . . . . . . . . . . . . . . . 134M32 . . . . . . . . . . . . . . . . . 28, 132M37... . . . . . . . . . . . . . . . . . 28, 29M3N . . . . . . . . . . . . . . . . . . . . . 28M3S . . . . . . . . . . . . . . . . . . . . . 28M451 . . . . . . . . . . . . . . . . . . . . 82M461 . . . . . . . . . . . . . . . . . . . . 84M481 . . . . . . . . . . . . . . . . . 82, 83M48-D . . . . . . . . . . . . . . . . . . . 139M56K(L)-D . . . . . . . . . . . . . . . . 84M7 . . . . . . . . . . . . . . 32, 124, 139M74 . . . . . . . . . . . . . . . . . 30, 132M74-D . . . . . . . . . . . . . . . . . . . . 32M74F(-D) . . . . . . . . . . . . . . 31, 33M74.. . . . . . . . . . . . . . . . . . 31, 123

Media


Med ia3 Seal Selection

by Media


Seal selection by

MediaSeal selection and mate-rial recommendation bymedia.

No. 00No connectionsNo circulation

No. 01No connectionsinternal circulation

Nr. 02Circulation of fluid frompump discharge nozzleto the shaft stuffing box(with internal recycling)Alternative: 01

No. 08Supply of external fluida) to the shaft stuffingbox, with internal recyc-ling into the pumpb) for quenching

No. 09External fluid (e.g. flushing or buffer fluid)to the shaft stuffing boxor quenching. Dischar-ge into an external sy-stem

No. 10Buffer or quench fluidfrom an elevated vessel;circulation of fluid bythermosyphon effect orpumping system

No. 11Buffer or quench fluidfrom a pressurized ves-sel; circulation by ther-mosyphon effect orpumping system

No. 12Buffer fluid from a pres-surized vessel; circula-tion by thermosyphoneffect or pump system;pressure is generated inthe vessel from thepump outlet through apressure accumulator orbooster system (e.g. avessel with diaphragmor pressure transmitter).Inboard sealOutboardseal

Inboard seal Outboard sealInboard seal Outboard sealInboard seal Outboard seal

SealOptional Quench

SealOptional Quench

SealOptional Quench

Leakage Leakage Leakage and piped away

Single mechanical seal arrangement

Double mechanical seal arrangements

Quench arrangements

The recommendations in the media ta-bles on pages 7 to 24 are based on thetypical case of a seal for a horizontalcentrifugal pump. Other types of machine,installation conditions, modes of opera-tion, designers, manufacturers and ope-rators specifications, local regulationsand so on can result in a different choiceof mechanical seal.For complex sealing duties it is always advisable for the user to consult with ourspecialist engineer.

Explanations to columns 1 to 16:

Column 1:Media designation

Designations of materials to be sealedcomply as far as possible with IUPAC rules (IUPAC = International Union ofPure and Applied Chemistry). Where amaterial has several commonly used de-signations and common names, it is listedin accordance with IUPAC rules withcross-referencing of its other names.Designations are listed in alphabetical order.

Column 2:Notes on the media

G = mixture/group (compound)The media is a mixture of various isomersof one substance or it is a group of subs-tances having close chemical ties.

N = natural productThe medium is a natural product or the refined form of a natural product withchanging proportions of its various consti-tuents. = trade markThe constituents of the media or their proportions in the medium are unknownor are not known exactly.

S = collective termThe generalized mechanical seal recom-mendation is no more than a pointer to asuitable mechanical seal.

V = impuritiesThe medium contains large quantities ofimpurities due to the peculiarities of theprocess.

Column 3:Concentration

= The media normally occurs in pureform and (as in the case of gases andother media requiring a double mechani-cal seal) the concentration has no bear-ing on the mechanical seal selection.


Column 7:Additional measures

D = Steam quench

(H), H = Heating (where necessary) of the seal housing, seal cover, buffer medium

kD = Conical stuffing box

SS = Splash guard necessary. Leakagepipe-away recommended.

SW = Regular replacement of buffer medium necessary. Alternative is a constant throughflow of buffer medium(arrangement 09).

QW = Regular replacement of quenchmedium necessary. An alternative is aconstant through flow of quench me-dium (arrangement 09); approximately0.25 l/min is recommended.

ThE = Thermal buffer

Column 8:Mechanical seal type

In the case of double or tandem mechani-cal seals, the recommendation applies tothe mechanical seal inboard. The choiceof the outboard seal is dictated by the buffer/-quench medium.

1 = Mechanical seal having O-ring se-condary seals; unbalanced or balanced;rotating spring in contact with the pro-duct, e. g. M3N, M7N, H7N

2 = Mechanical seal having O-ring secondary seals; unbalanced or balan-ced; rotating springs not in contact with the product, e. g. HJ ...

3 = Mechanical seal having O-ring secondary seals; unbalanced or balan-ced; stationary springs not in contact with the product, e. g. HR ...

4 = Same as 3 but no metal parts in the product; e. g. HR31/dH G9

5 = Mechanical seal with elastomer bellows; bellows as, MG...

6 = Mechanical seal with metal bel-lows; such as, MFL

X = Special design e.g. a modified MR-D

Column 9:Materials of construction

for inboard mechanical seals.For an explanation of the material codesand their indices, consult the material key(inside the back cover of this manual).

Column 10:Hazard warnings and reasonsfor recommending a double mechanical seal or quench.

When compiling these seal selections and material recommendations, it was generally assumed that the machine inquestion is located in a sheltered buildingfrequented occasionally or continually bypersons coming into contact with liquid orvapour leakage of medium from all typesof sealing points. As such, considerationsof health and environmental protectionhad a strong bearing on the choice of seal category.Health hazard and Ignition/Explosioncan lose much of their significance if themachine is installed in the open or inareas rarely frequented by people and ringed with warning signs. If no mentionis made to either of the reasons 1 to 5 forrecommending a double mechanical sealor a single mechanical seal with quench,it is acceptable to use a single mechani-cal seal.

The decision in favour of a single me-chanical seal must be taken by the user of the machine or the contractor. As he isthe only one to know all conditions and regulations relating to the process and toassess the risks.

Letters in column 10:Health hazard warnings

A = Corrosive. In its liquid,vapour or gas form, the me-dium attacks the skin, eyes

or mucous membrane.

C = Carcinogenic. The carcinogens are classified in:

C1 = Substances known by experienceto be capable of causing cancer in hu-mans

C2 = Substances clearly proven so far in animal experiments only ... of causing cancer ...

C3 = Substances whose cancer-caus-ing potential is suspected for good rea-son

G = Toxic. Together with air,the medium forms gases, va-pours or dusts capable of

causing acute or chronic health disordersor death.

H = Skin resorption. With many indus-trial materials, skinresorption of subs-tances capable of penetrating the skinwith ease constitutes a far greater risk ofpoisoning than inhalation. Skin contact,e.g. with aniline, nitrobenzene, phenol and many other substances, can give riseto potentially fatal poisoning, often wi-thout warning symptoms.

R = Irritant. Substanceswhich without being toxic can cause inflammation

through prolonged or repetitive directcontact with the skin, mucous membra-ne or eyes.

S = Sensitization. After sensitization, e. g. of the skin or respiratory tracts, al-lergic reactions can be triggered at vary-ing speed and in varying intensity depen-ding on a persons disposition. Reactionsof this type cannot be prevented with cer-tainty, even when the threshold limit va-lues are observed.

X = Hazardous to health(moderately toxic)

Technical grounds and environ-mental protection

1 = Vapour pressure/gasAt normal working temperatures, the medium has a vapour pressure of >1 bar. If the working temperature lies be-low boiling point (column 15) or if thesealing pressure lies clearly above the vapour pressure, a single mechanical seal may be used with consideration ofthe duty details.

2 = CorrosionThe medium attacks all standard metals.Mechanical seals with no metal parts onproduct side must therefore be used.

3 = Exclusion of airIf the medium contacts or mixes with theatmosphere, it forms an explosive or reacts with a damaging effect on the environment, the medium itself and themachine and mechanical seal.

4 = Lubricating propertiesUnder normal conditions, the medium hassuch poor lubricity that a single mechani-cal seal is at risk from dry running.

5 = IcingNormally the medium is conveyed at temperature below 0 C. Without auxi-liary equipment, the proper functioning of a single mechanical seal is at risk from freezing atmospheric moisture.

6 = LeakageAbsorbed and/or flushed away by thequench, or prevented by a double mechanical seal necessary.

7 = The medium is easilyignited

8 = The medium is flammable

9 = The medium is potentially explosive

(Hazard symbols taken from the Germanregulation concerning hazardous mate-rials (GefStoffV) published on 26 August1986, Federal Law Gazette I, page 1470).

0 = Insufficient informationThe medium designation is imprecise orthe available information on the mediumis insufficient to assess the serviceabilityof a single mechanical seal. Please notifyus of your experiences.

Med

ia

Column 11:TLV

The values quoted in ml/m3 = ppm (parts per million) are taken from Bulle-tin 30 published by the SenateCommis-sion for Testing Hazardous Materials on1st September 1994: Threshold LimitValues and Biological Material Toler-ances 1994.

Additional symbols:

mg: TLVs are quoted in mg/m3 instead of ppm

#, e. g. # 0.5 for barium ...: 0.5 mg/m3,calculated as Ba

* According to the current level of knowledge, the action of this substanceconstitutes a distinct carcinogenic ha-zard for humans. No concentration va-lues are given for this substance in the list because it is still impossible to quo-te any concentration as being safe. With some of these substances, there is even a great risk from absorptionthrough healthy skin. If the use of suchsubstances is unavoidable for technicalreasons, special safety and monitoringmeasures must be taken.

The seal selection takes account ofthe TLV as follows: TLV

Med

ia

B u r g m a n n M e c h a n i c a l S e a l s D e s i g n M a n u a l 1 5 . 3 7

1 2 3 40 5 6 7 8 10 11 12 1300 14 15 16

AAcetaldehyde (Ethanal) CH3CHO 100 D1 11 1 S B M2 G G C3,1,3,7 50 fl 124 21 0,78Acetates Acetic acid estersAcetic acid:

Seal selection by

Media

B u r g m a n n M e c h a n i c a l S e a l s D e s i g n M a n u a l 1 5 . 38

Amino sulfonic acids S TG D1 11 1 V B M1 G G OAmmonia NH3

Med

ia


Benzyl butyl phalate (BBP) Phthalic acid esters C19H20O4

Biphenyl C12H10 >75F200 S1 01 H 6 A S G T6 FBlack liquor Digester liquor,

basicBlast furnace gas

Seal selection by

Media


1 2 3 40 5 6 7 8 10 11 12 1300 14 15 16

Calcium carbonate Lime powder suspension

Calcium chlorate Ca(ClO3)2

Med

ia


Citric acid C6H8O7

Seal selection by

Media


Dibutyl phthalate (DBP) Phthalic acid esters

Dichlorobenzenes:1,2-Dichlorobenzene

(ortho-dichlorobenzene) C6H4Cl2

Med

ia


EEdible oil N

Seal selection by

Media


Formamide CH3NO

Med

ia


Hexachloroethane (perchloroethane) C2Cl6

Seal selection by

Media


LLacquer solvents S

Med

ia


MDEA N-Methyl-2,2'-iminodiethanole C5H13NO2

MEA N-Methyl ethanolamine C3H9NOMeat juice, meat broth N

Seal selection by

Media


Naphthol dyes

Med

ia


Perchlorobenzene Hexachlorobenzene

Perchloroethane Hexachloroethane

Perchloroethylene Tetrachloroethylene

Perhydrol Hydrogen peroxide,30-% solution

Petrol (gasoline, gas) unleaded,regular and supergrade G

Seal selection by

Media


Potassium chloride KCl

Med

ia


R 1112a 20 D1 11 1 S B M4 G G 1,4

R 1113 >40 D1 11 1 S B M4 G G 1,4 ga 158 28 (+)R 1122 >40 D1 11 1 S B M4 G G 1,4 ga 138 18 (+)R 1132 a >40 D1 11 1 S B M4 G G C3,1,4 ga 144 86 (+)RC 318

Seal selection by

Media


Soiled water WaterSoot-water mixture

Med

ia


Terphenyls (diphenyl benzenes): C18H14m-Terphenyl (1,3-diphenyl benzene) C18H14 Sch

Seal selection by

Media


Vinyl chloride C2H3Cl

Standard


Standard Sea ls

25 Mechanical Sealsfor Pumps and Compressors

Plain shafts, rotating spring,unbalancedM2N . . . . . . . . . . . . . . . . . . . . . . . 27M3N . . . . . . . . . . . . . . . . . . . . . 28/29M7N . . . . . . . . . . . . . . . . . . . . . 30/31M74-D . . . . . . . . . . . . . . . . . . . 32/33MG9 . . . . . . . . . . . . . . . . . . . . . 34/35MG1 . . . . . . . . . . . . . . . . . . . . . 36/37MF95N . . . . . . . . . . . . . . . . . . . . . 39

Plain shafts, rotating spring,balancedMFL85N . . . . . . . . . . . . . . . . . . 40/41HJ92N . . . . . . . . . . . . . . . . . . . 42/43

Stepped shafts, rotating spring,balancedH12N . . . . . . . . . . . . . . . . . . . . 44/45H7N . . . . . . . . . . . . . . . . . . . . . 46/47H74-D . . . . . . . . . . . . . . . . . . . . 48/49

Stationary spring, balancedHR . . . . . . . . . . . . . . . . . . . . . . 52/53HRC..N . . . . . . . . . . . . . . . . . . . 54/55Cartex . . . . . . . . . . . . . . . . . . . . 56/57Mtex . . . . . . . . . . . . . . . . . . . . . 58/59SH . . . . . . . . . . . . . . . . . . . . . . . . . 60SH (-D) . . . . . . . . . . . . . . . . . . . . . 61HRN . . . . . . . . . . . . . . . . . . . . . . . . 62MFL65 . . . . . . . . . . . . . . . . . . . . . . 63H10/H8 . . . . . . . . . . . . . . . . . . . . . 64

Split sealHGH . . . . . . . . . . . . . . . . . . . . . 50/51

26 B u r g m a n n K o n s t r u k t i o n s m a p p e 1 5 . 3

W e l c o m e t o o u r s e a l i n g w o r l dw w w . b u r g m a n n . c o m

Everythingunder controlaround the clock:Seal diagnosisin pumps

You never used to know thata mechanical seal wasdamaged until you saw itsleakage, which was usuallytoo late. Today, permanentseal monitoring by the Burg-mann MDS guards againstunwelcome surpri-ses. Because you alwaysknow the seals currentstate of performance.A simple warning system plus automatic deactivationof the pump if required provides additional safety.


Single sealUnbalancedConical springDependenton direction of rotationTo EN 12756*The M2 mechanical seal range featuresa spring loaded solid carbon graphite sealface. They are cost effective for basicapplications such as circulating pumpsfor water and heating systems.

Operating limits (see note on page 1)

d1 = 6 ... 38 mmm0.25" ... 1.5"p1 = 10 bar 145 PSIt = 20 ... 180 C m4 F ... 355 Fvg = 15 m/s 50 ft/sAxial movement: 1.0 mm

M2NItem Part no. Descriptionno. to DIN

242501.1 472 Seal face1.2 412.1 O-ring1.3 474 Thrust ring1.4 478 Righthand spring1.4 479 Lefthand spring2 475 Type G9 stationary seat3 412.2 O-ring

For plain shafts, spring rotating

M2N

M2N

Seal designations

Materials (to EN 12756)

Seal face: BStationary seats G4: Q1; S (Q1; V)

G6: Q1; S (Q1; V)G9: Q1; Q2; S; V

Stationary seatsRotating unit G4 G6 G9M2 M2 M2N4 M2N

Stationary seats

G4

d1f

6*8*

10*12*14*15*16*18*20*22*24*25*26*28*30*32*35*38*

d3151820222527273032353840414347485356

d6

171921

232729313334

37

d7

212325

273335373940

43

d83333333333

d1111.815.515.517.520.520.522.024.029.529.532.032.034.036.039.242.246.249.2

d1216.019.219.221.624.624.628.030.035.035.038.038.040.042.045.048.052.055.0

db8

1113161819212326283031323537394347

l1N

404040

404545455050

50

l3

17.517.517.5

19.520.522.023.525.026.5

26.5

l5f

1.51.51.5

1.52.02.02.02.02.0

2.0

l64444555555

l7f

8.58.58.5

8.59.09.09.09.09.0

9.0

l8m

17.517.517.5

17.519.519.519.519.519.5

19.5

l9m

10.010.010.0

10.011.511.511.511.511.5

11.5

l10

7.57.57.5

7.58.58.58.58.58.5

8.5

l12 l6.5*8.0*7.5*8.0*8.0*7.5*8.5*9.0*8.5*8.5*8.5*8.5*9.0*

10.0*11.5*13.0*13.5*13.0*

l145.67.06.67.0*7.0*6.67.58.07.57.57.57.58.09.0

10.510.511.010.3

l151.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.51.51.5

l163.83.83.83.83.83.85.05.05.05.05.05.05.05.05.05.05.05.0

l2110.915.515.916.016.017.419.020.522.023.525.026.526.526.525.028.528.532.0

l28

6.66.66.6

6.67.57.57.57.57.5

7.5

b

8888888888

Rn

1.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.51.51.5

*) Installation length differs from G4-seats

G6EN 12756

Unquoted dimensions as per Item 2

1) l3 valid for M2N,1) for M2 series l21 is valid (see table)

l 22

d 13


M3N

Single sealUnbalancedConical springDependenton direction of rotationTo EN 12756*The M3 mechanical seals are immenselypopular. Extremely rugged and reliable,they cover a wide spectrum of applica-tions in water pumps, sewage pumps,submerged pumps, chemical pumps, etc.


d1 = 6 ... 80 mm m0.25" ... 3.125"(M37G from d1 = 16 mm /M37 up to d1 = 55 mm)

p1 = 10 bar m145 PSIt = 20 ... 180 C m4 F... 355 F

(M37 up to 120 C)vg = 10 (15) m/s m33 (50) ft/sAxial movement: 1.0 mm

M3NItem Part no. Descriptionno. to DIN

242501.1 472 Seal face1.2 412.1 O-ring1.3 474 Thrust ring1.4 478 Righthand spring1.4 479 Lefthand spring2 475 Type G9 stationary seat3 412.2 O-ring


G4

M32Item nos and descriptions as for typeM3N, but with the seal face (carbon)shrink-fitted into the seal face carrier(Item no. 1.1).

Stationary seats

Unquoted dimensions as for Item 2.

G13

G6 (G30)EN 12756

G9EN 12756

Combination of materials and seal types

Gleit-ringe

1) l3 valid for M3...N-types1) for M3-series l21 is valid (see table).

Stationary seatsG4 G13 G63) G9

S V Q2 A;B S V Q1 A;B V Q1(Q2) (Q2)

M3 (S) M3 M3N M32 (A;B) M32 M32 M32 M32N4 M32N4 M32N4 M32N M32NM37 (U1) M37 M37 M37N4 M37N M37NM37G M37G M37G M37GN4 M37GN M37GN(Q12; Q22;U22)

3) Stationary seat G6 is also available in materials A and B (as style G30) (longer overall length than G6!).All material designations according to EN 12756. See back cover.

Rotatingunit(sealface)

l23

d 13


M3N

M37(d1 max. 55 mm)Item nos and descriptions as for typeM3N, but with the seal face brazed(tungsten carbide) to the seal face carrier(Item no. 1.1).

M37G(d1 min. 16 mm)Item nos and descriptions as for typeM3N, but with the seal face shrink-fitted (silicon carbide) into the seal facehousing (Item no. 1.1).

d314181921232426293133353637404346474953565959616466697176788384889098

100

d6

171921

232729313334

37394242444951

5456596265677072757781838895

d7

212325

273335373940

43454848505658

61636670737578808385909297

105

d8333333333333334444444444444444

d111)

11.515.515.517.520.520.522.024.029.529.532.032.034.036.039.242.2

46.249.252.253.3

55.359.760.8

66.569.571.5

76.582.783.090.295.2

d121)

16.019.219.221.624.624.628.030.035.035.038.038.040.042.045.048.0

52.055.058.062.0

64.068.469.3

75.478.480.4

85.491.592.099.0

104.0

d1316182022242526313436383940424446474954565859616466697178798385889098

103

db8

11131618192123262830313235373940434549525255586164666971747780838893

l1N

404040

404545455050

50505555555555

6060606070707070708080808090

l3m

15.516.016.5

18.019.522.021.523.526.5

26.526.528.528.528.533.536.0

38.539.546.045.047.049.055.055.055.055.055.057.062.061.8

l5f

1.51.51.5

1.52.02.02.02.02.0

2.02.02.02.02.02.02.0

2.02.02.02.52.52.52.52.52.52.52.52.52.53.0

l6444455555555556666666666667777

l7f

8.58.58.5

8.59.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.0

l8n

17.517.517.5

17.519.519.519.519.519.5

19.519.519.519.519.522.022.0

22.022.022.023.023.023.023.023.023.023.026.026.026.026.2

l9m

10.010.010.0

10.011.511.511.511.511.5

11.511.511.511.511.514.014.0

14.014.014.015.015.015.015.015.015.015.018.018.018.018.2

l10

7.57.57.5

7.58.58.58.58.58.5

8.58.58.58.58.5

10.010.0

10.010.010.010.512.012.012.012.012.012.012.512.512.513.0

l11f9.09.09.0

10.010.011.011.512.512.512.512.512.513.014.014.014.0

14.514.514.517.0

17.017.017.0

18.018.018.0

18.019.018.018.019.0

l126.58.07.56.56.57.58.59.08.58.58.58.59.0

10.011.511.512.012.011.311.813.213.212.812.812.813.514.514.514.514.214.214.914.215.216.2

l137.17.17.17.67.68.69.0

10.09.59.59.59.5

10.011.011.011.0

11.511.511.514.3

14.314.314.3

15.315.315.3

15.316.015.315.316.3

l145.67.06.65.65.66.67.58.07.57.57.57.58.09.0

10.510.5

11.010.310.812.0

11.611.611.6

13.313.313.3

13.013.713.014.015.0

l151.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.5

1.51.51.52.02.02.02.02.0

2.02.02.0

2.02.02.02.02.0

l163.83.83.83.83.83.85.05.05.05.05.05.05.05.05.05.0

5.05.05.06.0

6.06.06.0

6.06.06.0

6.06.06.06.06.0

l21f10.515.515.515.515.515.517.518.520.021.523.024.524.524.524.528.0

.28.031.034.035.0

.36.542.043.0

.47.050.051.0

.52.053.054.055.058.0

l22n11.916.916.917.417.417.419.520.522.023.525.026.526.526.525.028.5

28.532.234.737.3

39.244.745.7

49.052.055.0

54.355.356.356.359.3

l23s

16.5

16.518.019.020.522.023.523.524.524.528.0

28.031.034.035.0

36.542.043.0

47.050.051.0

52.052.754.054.058.0

l28

6.66.66.6

6.67.57.57.57.57.5

7.57.57.57.57.59.09.0

9.09.09.09.5

11.011.011.011.011.011.011.311.311.312.0

b2)

(8)(8)(8)

(8)(8)(8)(8)(8)(8)

(8)(8)(8)(8)(8)7,5(8)

7,5(8)(8)(8)8,0(8)(8)(8)(8)(8)(8)(10)(10)

10,0

Rf1.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.51.51.51.51.52.52.52.52.52.52.52.52.52.52.52.52.52.52.52.5

1) Fitting dimensions d11 and d12 only apply to type M37G with D1 >16 mm2) Dimensions in brackets lie either above or below L1N*) According to EN 12756

For the spring-loaded units the following measures apply:M3-series: I21; M32-series: I22; M37..-series: I23; M3..N-series: I3.

d16*8*

10*12*14*15*16*18*20*22*24*25*26*28*30*32*33*35*38*40*42*43*45*48*50*53*55*58*60*63*65*68*70*75*80*

4 screws eachoffset 90


Combination of materials

For plain shafts, spring(s) rotating

M7N

Single sealUnbalancedIndependentof direction of rotationTo EN 12756*The M7 mechanical seal range is de-signed for universal application and idealsuited for standardisation. The loosely in-serted seal faces are easily exchanged,permitting all combinations of materialsand stock rationalisation. With Super-Sinus spring (see page 139).


d1 = 14 ... 200 mm m0.55 ... 8p1 = 16 (25) bar m230 (360) PSIt = 50 ... 220 C

= 58 F ... 430 Fvg = 20 m/s m66 ft/s

Axial movement:d1 up to 25 mm: 1.0 mmd1 28 bis 63 mm: 1.5 mmd1 ab 65 mm and above: 2.0 mm

Seal code explanation

d1 = 53 mm Seal face made of cast Cr-steel (S) Type G13 stationary seat made of

carbon graphite (B) Viton O-rings (V) Metal parts including spring material

1.4571 (G) Rotating unit M74 M74/53G13SBVGGThe basic description M74N/53 SBVGGindicates a G9 seat, installation dimen-sions to EN 12756.

M7N(d1 = max. 100 mm)

Item Part no. Descriptionno. to DIN

242501.1 472 Seal face1.2 485 Drive collar1.3 474 Thrust ring1.4 412.1 O-ring1.5 477 Spring1.6 904 Set screw2 475 Type G9 stationary seat3 412.2 O-ring

G4

M74Dimensions, item nos and descriptionsas for M7N, but with multiple springs(Item no. 1.5). Preferably for d1 >100mm.

Stationary seats

Unquoted dimensions as for item no. 2

G13

G9EN 12756 (DIN 24960)

G6EN 12756(DIN 24960)

1) d1 > 100 mm : 302) d1 > 100 : +0,13) d1 > 100 : H7

4 set screws with cone points(standardarrangement).

Torque transmissiond1 >100 mm

Only M78N:G9

S V Q1B A Q1

(Designations to EN 12756, see insidethe back cover of this manual)

Stationary seals

G4 G13mmmG9 G6

Q1 A;B A;B Q1 Q1(Q2) (Q2) (Q2)

S V Q1 Q2

Seal faces


M7N

M7Fd1 max. 100 mm

M74Fd1 = 14 ... 200 mm

Dimensions, item nos and descriptionsas for type M7N, but with pumpingscrew. Dependent on direction ofrotation!

M7 S2d1 max. 100 mm

M74 S2d1 = 28 ... 200 mm

Dimensions, item nos and descriptionsas for type M7N, but with drive key.(without item no. 1.6)

M78Nd1 = 18 ... 100 mmt max. 180 C

Items nos, description and unspecifieddimensions as for M7N. Design of therotating portion especially for secondarysealing element made of PTFE (T).

d1f14*16*18*20*22*24*25*28*30*32*33*35*38*40*43*45*48*50*53*55*58*60*63*65*68*70*75*80*85*90*95*

100*105*110*115*120*125*130*135*140*145*150*155*160*165*170*175*180*185*190*195*200*

d3252733353739404345474850555760626567707279818486899199

104109114119124138143148153158163168173178183191196201206211216221226231236

d6n21.023.027.029.031.033.034.037.039.042.042.044.049.051.054.056.059.062.065.067.070.072.075.077.081.083.088.095.0

100.0105.0110.0115.0122.2128.2136.2138.2142.2146.2152.2156.2161.2168.2173.2178.2183.2188.2193.2207.5212.5217.5222.5227.5

d7n25.027.033.035.037.039.040.043.045.048.048.050.056.058.061.063.066.070.073.075.078.080.083.085.090.092.097.0

105.0110.0115.0120.0125.0134.3140.3148.3150.3154.3158.3164.3168.3173.3180.3185.3190.3195.3200.3205.3219.3224.3229.3234.3239.3

d83333333333334444444444444444444455555555555555555555

d1120.522.024.029.529.532.032.036.039.242.244.246.249.252.253.355.359.760.863.866.569.571.574.576.582.783.090.295.2

100.2105.2111.6114.5

d1224.628.030.035.035.038.038.042.045.048.050.052.055.058.062.064.068.469.372.375.478.480.483.485.491.592.099.0

104.0109.0114.0120.3123.3

d2416182022242627303234353740424547505255576062656770727782879297

102108113118123128133138143148153158163168173178183188193198203

d31

32343638394244464749545659616466697178808385889099

104109114119124

ds3436384042444547495151545961656669717576838588959395

105109114119124129143148153158163168173178183188196201206211216221226231236241

l1Kl35.035.037.537.537.540.040.042.542.542.542.542.545.045.045.045.045.047.547.547.552.552.552.552.552.560.060.060.060.065.065.065.067.067.067.067.067.067.067.067.067.069.080.080.080.080.080.084.084.084.084.084.0

l325.025.026.026.026.028.528.531.031.031.031.031.031.031.031.031.031.032.532.532.537.537.537.537.534.542.042.041.841.846.847.847.847.047.047.047.047.047.047.047.047.047.056.056.056.056.056.056.056.056.056.056.0

l5i1.51.52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.52.52.52.52.52.52.52.52.52.53.03.03.03.03.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

l644555555555566666666666677777777

1010101010101010101012121212121212121212

l7i8.58.59.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.0

l8n17.517.519.519.519.519.519.519.519.519.519.519.522.022.022.022.022.023.023.023.023.023.023.023.026.026.026.026.226.226.225.225.230.030.030.030.030.030.030.030.030.032.034.034.034.034.034.038.038.038.038.038.0

l9n10.010.011.511.511.511.511.511.511.511.511.511.514.014.014.014.014.015.015.015.015.015.015.015.018.018.018.018.218.218.217.217.220.020.020.020.020.020.020.020.020.022.024.024.024.024.024.028.028.028.028.028.0

l107.57.58.58.58.58.58.58.58.58.58.58.5

10.010.010.010.010.010.512.012.012.012.012.012.012.512.512.513.015.015.015.015.0

l11i10.011.512.512.512.512.512.514.014.014.014.514.514.514.517.017.017.017.017.018.018.018.018.018.019.018.018.019.019.019.020.020.0

l12i6.58.59.08.58.58.58.5

10.011.511.512.012.011.311.813.212.812.812.813.514.514.514.514.214.214.914.215.216.216.016.017.017.0

l13i7.69.0

10.09.59.59.59.5

11.011.011.011.511.511.511.514.314.314.314.314.315.315.315.315.315.316.015.315.316.316.316.317.317.3

l14i5.67.58.07.57.57.57.59.0

10.510.510.511.010.310.812.011.611.611.612.313.313.313.313.313.013.713.014.015.014.814.815.815.8

l151.21.21.51.51.51.51.51.51.51.51.51.51.51.52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

l163.83.85.05.05.05.05.05.05.05.05.05.05.05.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.0

l286.66.67.57.57.57.57.57.57.57.57.57.59.09.09.09.09.09.5

11.011.011.011.011.011.011.311.311.312.014.014.014.014.0

b44556666666666666666888888888

1010101010101010101010101012121212121212121212

fi66777888888888888888999999

1010101010101010101010101010101012121212121212121212

f1f

3.53.53.53.53.54.04.04.04.04.04.04.04.04.04.04.54.54.55.55.55.55.54.05.55.55.55.58.08.08.0

mxM5M5M5M5M5M5M5M6M6M6M6M6M6M6M6M6M6M6M6M6M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8

10101010101313131313131313131313131313131313131313161616162222222020202020202020202024242424242424242424

pmax. td1.51.51.11.11.51.51.51.51.51.51.51.51.51.51.51.51.51.51.51.51.91.91.91.91.91.91.91.91.92.32.32.32.32.32.32.32.32.32.32.32.32.32.12.12.12.12.12.12.12.12.12.1 d 1

> 2

00 o

n re

ques

t

d1 = 68: mx = M6Drive keyDIN 6885


Torque transmission

For plain shafts, springs rotating

M74-D

Double sealUnbalancedIndependentof direction of rotationMultiple springsDouble seals in the M74-D series havethe same design-features as the M7family of single seals (easy-to-replaceseal faces, etc.). Apart from the installati-on length of the drive collar, all fittingdimensions (d1 100 mm 2.0 mm

Combination of materials

Dimensions are identical throughout theM7 series, so it is possible to use thesame face materials as for type M7N(see page 30).

Double seals to EN 12756

EN specifies single seals in a back-to-back arrangement. It is possible, there-fore, to choose from the following combi-nations: unbalanced/unbalanced (e. g. M7N/M7N) balanced/balanced (e. g. H7N/H7N) unbalanced/balanced (e. g. M7N/H7N). Please consult the single-sealtables for dimensions.

Spring loaded drive pin: M74-D22

drive pin 1.4.1 disk 1.4.2 thrust spring 1.4.3

For d1 >100 mm: 4 set screws withcone points (standard arrangement)

2 )

3 )

1) d1 > 100 mm: 302) d1 > 100: +0,13) d1 > 100: H7

4 screws eachoffset 90


M74

-DM74F-DDimensions, item nos and descriptionsas for type M74-D, but with pumpingscrew (Item no. 1.4). Dependent ondirection of rotation!Torque transmission via set screws withcone points.

d11820222425283032333538404345485053555860636568707580859095

100105110115120125130135140145150155160165170175180185190195200

d333353739404345474850555760626567707279818486899199

104109114119124138143148153158163168173178183191196201206211216221226231236

d6f27.029.031.033.034.037.039.042.042.044.049.051.054.056.059.062.065.067.070.072.075.077.081.083.088.095.0

100.0105.0110.0115.0122.2128.2136.2138.2142.2146.2152.2156.2161.2168.2173.2178.2183.2188.2193.2207.5212.5217.5222.5227.5

d7f33.035.037.039.040.043.045.048.048.050.056.058.061.063.066.070.073.075.078.080.083.085.090.092.097.0

105.0110.0115.0120.0125.0134.3140.3148.3150.3154.3158.3164.3168.3173.3180.3185.3190.3195.3200.3205.3219.3224.3229.3234.3239.3

d833333333334444444444444444444455555555555555555555

d944444444444444444455555555555577777777777777777777

d11i

24.029.529.532.032.036.039.242.244.246.249.252.253.355.359.760.863.866.569.571.574.576.582.783.090.295.2

100.2105.2111.6114.5

d1230.035.035.038.038.042.045.048.050.052.055.058.062.064.068.469.372.375.478.480.483.485.491.592.099.0

104.0109.0114.0120.3123.3

ds

42444547495151545961656669717576838588959395

105109114119124129143148153158163168173178183188196201206211216221226231236241

l1g

61.061.061.061.061.062.062.062.062.062.069.070.070.070.070.073.073.073.086.086.085.085.091.092.092.092.592.592.590.590.5

108.0110.0110.0110.0110.0110.0110.0110.0110.0114.0127.0127.0127.0127.0127.0135.0135.0135.0135.0135.0

l33838383838393939393941424242424343435656555555565656565656566870707070707070707079797979797979797979

l4f19.019.019.019.019.019.519.519.519.519.520.521.021.021.021.021.521.521.528.028.027.527.527.528.028.028.028.028.028.028.034.035.035.035.035.035.035.035.035.035.039.539.539.539.539.539.539.539.539.539.5

l52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.52.52.52.52.52.52.52.52.52.53.03.03.03.03.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

l6555555555566666666666677777777

1010101010101010101012121212121212121212

l9999999999999999999999999999999

l8f

19.519.519.519.519.519.519.519.519.519.522.022.022.022.022.023.023.023.023.023.023.023.026.026.026.026.226.226.225.225.230.030.030.030.030.030.030.030.030.032.034.034.034.034.034.038.038.038.038.038.0

l9f

11.511.511.511.511.511.511.511.511.511.514.014.014.014.014.015.015.015.015.015.015.015.018.018.018.018.218.218.217.217.220.020.020.020.020.020.020.020.020.022.024.024.024.024.024.028.028.028.028.028.0

l108.58.58.58.58.58.58.58.58.58.5

10.010.010.010.010.010.512.012.012.012.012.012.012.512.512.513.015.015.015.015.0

l11i

12.512.512.512.512.514.014.014.014.514.514.514.517.017.017.017.017.018.018.018.018.018.019.018.018.019.019.019.020.020.0

l129.08.58.58.58.5

10.011.511.512.012.011.311.813.212.812.812.813.514.514.514.514.214.214.914.215.216.216.016.017.017.0

l1310.09.59.59.59.5

11.011.011.011.511.511.511.514.314.314.314.314.315.315.315.315.315.316.015.315.316.316.316.317.317.3

l148.07.57.57.57.59.0

10.510.510.511.010.310.812.011.611.611.612.313.313.313.313.313.013.713.014.015.014.814.815.815.8

l151.51.51.51.51.51.51.51.51.51.51.51.52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

555555555555666666666666666666

l16 l287.57.57.57.57.57.57.57.57.57.59.09.09.09.09.09.5

11.011.011.011.011.011.011.311.311.312.014.014.014.014.0

l3117.017.017.017.017.017.517.517.517.517.518.519.019.019.019.019.519.519.523.523.524.524.524.523.525.525.525.025.525.025.030.531.531.531.531.531.531.531.531.531.535.535.535.535.535.535.535.535.535.535.5

l351515151515151515151515151515151515151919191919191919191919192222222222222222222222222222222222222222

mxM5M5M5M5M5M6M6M6M6M6M6M6M6M6M6M6M6M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8

tg

3.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.5


For plain shafts, rotating spring

MG9

Single sealUnbalancedIndependent of directionof rotationElastomer bellowsThe MG9 is (US Patent No. 6,220,601)designed for medium-range pressuresand loads. Within its operating limits itcan be put to universal use in pumpsthanks to the following attributes: for all fitting lengths only one bellows

unit for each size of diameter length compensation by means of a

conical spring of required length, withsingle easy-to-fit clamp-type connector

no need to change existing pumpinstallation spaces

smallest external diameter of all bel-lows seals on the world market

no torsion on bellows and spring no adhesive joints self-centering conical spring (suppor-

ted directly on the shaft collar withoutan additional washer)

technical approval issued by a top-name, global pump manufacturer

compact, unsplit bellows unit with sta-tionary seal face for reliable installati-on and operation (deposits betweenthe bellows and the seal face are im-possible, ruling out all risk of misalign-ment)

St

anda

rd

Spec

ial

SeatsMG9Item Part No. Description

DIN24250

1.1 472 Seal face1.2 481 Bellows1.3 485 Driver collar1.4 484.1 L ring1.5 474 Washer2 477 Spring3 475 Seat4 412 Corner sleeve


d1 = 10 ... 100 mm 0.375 ... 4p1*= 8 (12) bar 116 (174) PSIt* = 20 ... +90 (140) C

= 4 ... +194 (284) Fvg = 10 m/s 33 ft/spermissible axial movement: 0.5 mm*) dependent on the medium, size andmaterials

Materials

Seal component Material(DIN)

Seal face Carbon (B) SiC (Q1)

Seat Ceramic (V) SiC (Q1)

Bellows / Perbunan (P) Corner Viton (V) sleeve EPDM (E) Spring 1.4310 (F)

1.4571 (G) Driver collar / 1.4301 (F) L ring 1.4571 (G)

1.4401

G50Euro standard

G55US standard

G60EN 12756(DIN 24960)


d1 d6 d7 d14 d16 da dbi l1t l1K l1N l1S l5i l6 l17 l28 l2910 17 21 11.0 24.60 19.6 13.0 53.0 32.5 40 34.0 1.5 4 7.5 6.6 9.012 19 23 13.5 27.80 21.6 15.0 53.0 32.5 40 34.0 1.5 4 7.5 6.6 9.014 21 25 17.0 30.95 24.0 18.0 54.5 35.0 40 35.5 1.5 4 9.0 6.6 10.515 17.0 30.95 25.0 19.0 54.5 35.5 9.0 10.516 23 27 17.0 30.95 26.5 20.0 54.5 35.0 40 35.5 1.5 4 9.0 6.6 10.518 27 33 20.0 34.15 29.0 22.0 54.5 37.5 45 35.5 2.0 5 9.0 7.5 10.520 29 35 21.5 35.70 31.5 24.5 54.5 37.5 45 35.5 2.0 5 9.0 7.5 10.522 31 37 23.0 37.30 33.0 27.0 54.5 37.5 45 35.5 2.0 5 9.0 7.5 10.524 33 39 26.5 40.50 37.0 29.0 54.5 40.0 50 35.5 2.0 5 9.0 7.5 10.525 34 40 26.5 40.50 38.0 30.0 54.5 40.0 50 35.5 2.0 5 9.0 7.5 10.528 37 43 29.5 47.65 41.0 34.0 72.0 42.5 50 45.0 2.0 5 10.5 7.5 12.030 39 45 32.5 50.80 43.0 36.0 72.0 42.5 50 45.0 2.0 5 10.5 7.5 12.032 42 48 32.5 50.80 45.0 38.0 72.0 42.5 55 45.0 2.0 5 10.5 7.5 12.033 42 48 36.5 54.00 46.0 39.0 72.0 42.5 55 45.0 2.0 5 10.5 7.5 12.035 44 50 36.5 54.00 48.0 41.0 72.0 42.5 55 45.0 2.0 5 10.5 7.5 12.038 49 56 39.5 57.15 52.5 44.5 72.0 45.0 55 45.0 2.0 6 10.5 9.0 12.040 51 58 42.5 60.35 55.5 47.5 72.0 45.0 55 45.0 2.0 6 10.5 9.0 12.043 54 61 46.0 63.50 58.5 50.5 83.0 45.0 60 53.0 2.0 6 10.5 9.0 12.045 56 63 46.0 63.50 60.5 52.5 83.0 45.0 60 53.0 2.0 6 10.5 9.0 12.048 59 66 49.0 66.70 64.0 56.0 83.0 45.0 60 53.0 2.0 6 10.5 9.0 12.050 62 70 52.0 69.85 66.0 58.0 84.5 47.5 60 54.5 2.5 6 12.0 9.5 13.553 65 73 55.5 73.05 69.0 61.0 84.5 47.5 70 54.5 2.5 6 12.0 11.0 13.555 67 75 58.5 76.20 71.0 63.0 84.5 47.5 70 54.5 2.5 6 12.0 11.0 13.558 70 78 61.5 79.40 76.0 66.0 84.5 52.5 70 54.5 2.5 6 12.0 11.0 13.560 72 80 61.5 79.40 78.0 68.0 84.5 52.5 70 54.5 2.5 6 12.0 11.0 13.563 75 83 82.0 71.5 52.5 70 2.5 6 11.0 65 77 85 68.0 92.10 84.0 73.5 86.0 52.5 80 65.0 2.5 6 14.5 11.0 16.068 81 90 71.0 95.25 87.0 76.5 86.0 52.5 80 65.0 2.5 7 14.5 11.3 16.070 83 92 71.0 95.25 89.0 79.0 86.0 60.0 80 65.0 2.5 7 14.5 11.3 16.075 88 97 77.5 101.60 95.0 85.0 89.0 60.0 80 68.0 2.5 7 14.5 11.3 16.080 95 105 84.0 114.30 101.5 91.5 99.0 60.0 90 76.0 3.0 7 18.5 12.0 20.085 100 110 87.0 117.50 99.0 60.0 90 76.0 3.0 7 18.5 14.0 20.090 105 115 93.5 123.85 111.5 103.0 103.0 65.0 90 79.0 3.0 7 18.5 14.0 20.095 110 120 96.5 127.00 103.0 65.0 90 79.0 3.0 7 18.5 14.0 20.0

100 115 125 103.0 133.35 122.5 114.0 106.0 65.0 90 82.0 3.0 7 18.5 14.0 20.0

d1 d61 d71 da db il14 l15 l41 l51 l610.375 0.625 0.875 0.740 0.492 1.125 1.500 0.313 0.050 0.2500.500 0.750 1.000 0.878 0.630 1.125 1.500 0.313 0.050 0.2500.625 0.937 1.250 1.043 0.787 1.281 1.718 0.406 0.050 0.3440.750 1.062 1.375 1.161 0.905 1.281 1.718 0.406 0.050 0.3440.875 1.187 1.500 1.299 1.063 1.343 1.781 0.406 0.050 0.3441.000 1.312 1.625 1.496 1.200 1.437 2.000 0.437 0.050 0.3751.125 1.437 1.750 1.634 1.358 1.500 2.062 0.437 0.050 0.3751. 250 1.563 1.875 1.772 1.496 1.500 2.062 0.437 0.050 0.3751.375 1.687 2.000 1.890 1.614 1.562 2.124 0.437 0.050 0.3751.500 1.813 2.125 2.067 1.752 1.562 2.124 0.437 0.050 0.3751.625 2.000 2.375 2.244 1.909 1.875 2.500 0.500 0.050 0.4371.750 2.125 2.500 2.382 2.028 1.875 2.500 0.500 0.050 0.4371.875 2.250 2.625 2.520 2.165 2.000 2.625 0.500 0.050 0.4372.000 2.375 2.750 2.598 2.283 2.000 2.625 0.500 0.050 0.4372.125 2.375 3.000 2.795 2.421 2.249 2.937 0.562 0.050 0.5002.250 2.437 3.125 2.992 2.559 2.249 2.937 0.562 0.050 0.5002.375 2.563 3.250 3.071 2.697 2.375 3.062 0.562 0.050 0.5002.500 2.687 3.375 3.228 2.834 2.375 3.062 0.562 0.050 0.5002.625 2.812 3.375 3.307 2.953 2.562 3.375 0.625 0.100 0.5622.750 2.937 3.500 3.504 3.110 2.562 3.375 0.625 0.100 0.5622.875 3.062 3.750 3.642 3.228 2.687 3.500 0.625 0.100 0.5623.000 3.187 3.875 3.760 3.366 2.687 3.500 0.625 0.100 0.5623.125 3.312 4.000 4.000 3.583 2.968 3.906 0.781 0.100 0.6563.250 3.437 4.125 2.968 3.906 0.781 0.100 0.6563.375 3.562 4.250 2.968 3.906 0.781 0.100 0.6563.500 3.687 4.375 4.390 3.937 2.968 3.906 0.781 0.100 0.6563.625 3.812 4.500 3.093 4.031 0.781 0.100 0.6563.750 3.937 4.625 4.646 4.252 3.093 4.031 0.781 0.100 0.6563.875 4.062 4.750 3.218 4.156 0.781 0.100 0.6564.000 4.187 4.875 4.921 4.567 3.218 4.156 0.781 0.100 0.656

d1 d1 d14 d16 da dbi l1 tl1S l17 l290.375 9.53 11.0 24.60 18.8 12.5 53.0 34.0 7.5 9.00.500 12.70 13.5 27.80 22.3 16.0 53.0 34.0 7.5 9.00.625 15.88 17.0 30.95 26.5 20.0 54.5 35.5 9.0 10.50.750 19.05 20.0 34.15 29.5 23.0 54.5 35.5 9.0 10.50.875 22.23 23.0 37.30 33.0 27.0 54.5 35.5 9.0 10.51 .000 25.40 26.5 40.50 38.0 30.5 54.5 35.5 9.0 10.51 .125 28.58 29.5 47.65 41.5 34.5 72.0 45.0 10.5 12.01 .250 31.75 32.5 50.80 45.0 38.0 72.0 45.0 10.5 12.01 .375 34.93 36.5 54.00 48.0 41.0 72.0 45.0 10.5 12.01 .500 38.10 39.5 57.15 52.5 44.5 72.0 45.0 10.5 12.01 .625 41.28 42.5 60.35 57.0 48.5 72.0 45.0 10.5 12.01 .750 44.45 46.0 63.50 60.5 51.5 83.0 53.0 10.5 12.01 .875 47.63 49.0 66.70 64.0 55.0 83.0 53.0 10.5 12.02.000 50.80 52.0 69.85 66.0 58.0 84.5 54.5 12.0 13.52.125 53.98 55.5 73.05 71.0 61.5 84.5 54.5 12.0 13.52.250 57.15 58.5 76.20 76.5 65.0 84.5 54.5 12.0 13.52.375 60.33 61.5 79.40 78.5 68.5 84.5 54.5 12.0 13.52.500 63.50 65.0 82.55 82.0 72.0 84.5 54.5 12.0 13.52.625 66.68 68.0 92.10 84.0 75.0 86.0 65.0 14.5 16.02.750 69.85 71.0 95.25 89.0 79.0 86.0 65.0 14.5 16.02.875 73.03 74.5 98.45 92.5 82.0 89.0 68.0 14.5 16.03.000 76.20 77.5 101.60 95.5 85.5 89.0 68.0 14.5 16.03.125 79.38 80.5 111.15 101.5 91.0 99.0 76.0 18.5 20.03.250 82.55 84.0 114.30 99.0 76.0 18.5 20.03.375 85.73 87.0 117.50 99.0 76.0 18.5 20.03.500 88.90 90.5 120.65 111.5 100.0 99.0 76.0 18.5 20.03.625 92.08 93.5 123.85 103.0 79.0 18.5 20.03.750 95.25 96.5 127.00 118.0 108.0 103.0 79.0 18.5 20.03.875 98.43 100.0 130.20 106.0 82.0 18.5 20.04.000 101.60 103.0 133.35 125.0 116.0 106.0 82.0 18.5 20.0

MG9 . . . the alternativeBurgmann* Crane* Sealol* Dimensions Table

MG910/d1-G50 1A 43 CE long inch / mm1A 43 CE long mm

MG920/d1-G50 2 43 CE short inch / mm2 43 CE short mm

MG901/d1-G55 1 43 CU long inch (USA only)

MG921/d1-G55 2 43 CU short inch (USA only)21 43 CU short inch (USA only)

MG912/d1-G60 502 43 DIN mm521 43 DIN mm

2100-l1k 43 DIN mm

MG913/d1-G60 2100-l1N mm

* identical fitting dimensions

A

CB

AB

C

MG9

Dimensions in inches / mm Dimensions in inches

AB

CC

AA

A

A


Seal faces SeatsG4, G6 G9 G50 G60 G606

Q1 S V Q1 S V V Q1 BA Q1 U3


MG1

Single sealUnbalancedIndependentof direction of rotationElastomer bellowsMechanical seals of the MG series areamongst the most commonly used. Thebellows is not subjected to any torsionalstress and its ingenious design incorpo-rates several functions, as seal face carri-er, secondary sealing element and drivecollar. The seal face is driven through thespring and L-rings. There are no bondedjoints and all the face materials are inter-changeable without having to modify anydimensions. Highly recommended for du-ties with media containing solids eg. inwaste water and sewage applications.

MG1Item Part No. Description

DIN24250

1.1 472 Seal face1.2 481 Bellows1.3 484.2 "L-ring

(spring collar)1.4 484.1 "L-ring

(spring collar)1.5 477 Spring2 475 Seat3 412 O-ring or cup rubber

G4

Stationary seats

*) Unquoted dimensions as for G9

G6*EN 12756


d1 = 10 ... 100 mmp1 = 12 (16) bar m170 (230) PSI

vacuum up to 0.5 bar (up to 1 barwith seat locking)

t = 20 ... +120 (140) C4 F ... +250 (284) F

vg = 10 m/s m33 ft/s

MG12Dimensions, items and designations same as for MG1, but with an extendedbellows tail to achieve the fitting lengthI1K according to EN 12756 in combinati-on with seat G6 or G60. (d4 min acc. to EN12756 is exceeded).

Materials

Seal faces and seats(see table for combinations): Silicon carbide SiC (Q1) Carbon graphite, antimony-impregnated (A) Tungsten carbide (U3) Special cast chromium-molybdenum steel (S)

Aluminium oxide (V) Carbon graphite, resin-impregnated (B)

Bellows: FPM (V), EPDM (E), NBR (P)Springs, L-rings: 1.4571 (G), Hastelloy C4 possible, please inquire.Designations ( ) according to EN 12756.

G606*EN 12756

G60*EN 12756

G50

h 8

+ 0,5

G9EN 12756


Dimensions in mm.Fitting length tolerances: d1 10 ... 12 mm 0.5; d1 14 ... 18 mm 1.0; d1 20 ... 26 mm 1.5; d1 = 28 ... 100 mm 2.0*) Minimum diameter of the mating collar

Dimensions adaptations for specific conditions, e.g. shaft in inches or special seat dimensions are available on request..

MG

1MG13Dimensions, items and designationssame as for MG 1, but with an extendedbellows tail to achieve the fitting lengthI1N according EN 12756 in combinationwith seat G6 or G60. (d4 min acc. to EN12756 is exceeded).

MG1S20Dimensions, items and designationssame as for MG 1, but with an extendedbellows tail to achieve the special fit-ting length I1S in combination with seatG50.

RMG12 (not illustrated)Identical to MG1, but with a special bel-lows surface on the shaft side. For use inhot-water pumps at up to 120 Cand 25 bar and/or 140 C/16 bar.Only in combination with seat G606. d1 = 12 ... 38 mm

MG1 multiple sealThe MG1 can also be used as a doubleseal in tandem or back-to-back arrange-ment. Installation proposals can be sup-plied on request.

d11012141516181920222425283032333538404243454850535558606568707580859095

100

d3f15.717.719.720.821.023.726.726.727.731.231.235.037.040.240.243.246.248.851.851.853.856.858.862.264.267.270.075.078.080.085.590.596.0

102.0107.0112.0

d6171921

2327

2931333437394242444951

54565962656770727781838895

burgmann design manual 15-3

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