advanced emc technologies high performance sealing solutions guide
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Sealing Solutions High Performance
1095 Evergreen Circle, Suite 200 The Woodlands, Texas 77380
800 644-9770 or 713-389-5049 info@Advanced-EMC.com
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Low Friction Chemical Compatibility Vacuum to High Pressure Extreme Temperatures Engineered for High Performance
Rotary Reciprocating Static APPLICATIONS
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Introducing the widest selection of high performance spring-energized seals available today... Advanced EMC Technologies specializes in the design and manufacture of spring-energized seals made from a wide range of high-performance polymers. Advanced EMC Technologies seals offer very low friction, wide temperature range, full chemical compatibility, and long service life. Advanced EMC Technologies seals routinely handle applications where conventional seals fail.
Spring Materials. Advanced EMC Technologies seals is are energized by one of three different spring style made from 300-series stainless steel. For unusually corrosive service we make the spring from Hastelloy.
Designs. There are three styles of seals, based on which of three different types of spring is used in the seal. This design has a cantilever beam spring, and is used for general purpose applications. The maximum pressure rating for rod and piston seal designs ranges from 3,000 to 30,000 psi. Cryogenic designs are rated to -320 F .
Design Concept. PTFE and other polymer blends make excellent sealing materials, especially when their resilience is enhanced by incorporating a spring energizer into a U-shaped groove in the seal itself. The spring provides permanent elasticity and immunity from compression set. The shape of the seal makes it pressure-actuated, becoming tighter as media pressure rises. By combining our high performance Fluorolon PTFE blends with corrosion resistant metal springs, Advanced EMC Technologies seals eliminate the disadvantages associated with conventional elastomeric seals - degradation, heat aging, embrittlement, chemical attack, swelling, compression set, and high friction. Seal materials. Advanced EMC Technologies seals are made from PTFE blends and other high performance polymers .
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Hardware recommendations
Surface finish. Improving the finish on static and dynamic mating surfaces is a primary method for obtaining longer seal life, lower friction, and greater sealing integrity, in general we recommend finishes as shown below:
Mating Surface Hardness. Harder surfaces extend seal and hardware life by preventing abrasion to the metal and holding a smooth finish. In moderate speed and pressure conditions, the minimum recommended hardness is 44 RC. Higher speed/pressure or poor lubrication may require values from 65 to 72 RC, using special coatings Hardenable materials include: Shaft Coatings. In high-spees rotary or severe-service reciprocating, use chromium oxide or similar coatings with high hardness and smooth finish. Avoid chrome plating or use in light duty service only. Consult factory for further data on coatings and recommended substrates for your specific application.
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contact us @ 1-800-644-9770 info@advanced-emc.com
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SEAL DESIGN
SEALTYPE& REF.
PRESS.RATING
(psi)
TEMP.RANGE
F
VACUUM orLOW
PRESS.SEALINGABILITY
APPLICATIONS & SERVICE DATA
STATIC SERVICETemperature
LevelSealing Ability In Maximum
Pressure
Lignt Gases
Solvent Oil
RECIPROCATING SERVICETemperature
LevelMaximum Pressure (psi) Friction
Rating
at 30sfpm
at 100 sfpm
at 250 sfpm
ROTARY SERVICETemperature
LevelMaximum Pressure (psi) Friction
Rating
at 50sfpm
at 100 sfpm
1000 sftpm
2500 sfpm
5000sfpm
Standard Lip 3000 -320 to 575 E Gneral purpose static, reciprocating and slow rotary service as rod, piston or shaft seal.
Applications include hydraulic and pneumatic cylin-ders, actuators, connects, valve components.
-320 F F NA NA 5000
Ambient G G E 3000
550 F E E E 1500
-320 F F NA NA 5000
Ambient G G E 3000
450 F G E E 1500
-200 F G NA NA 5000
Ambient G G E 3000
550 F G G G 1500
-320 F F NA NA 15000
Ambient G G E 10000
550 F E E E 5000
-320 F F NA NA 30000
Ambient G E E 20000
550 F E E E 15000
-320 F G NA NA 5000
Ambient G G E 3000
550 F E E E 1500
-65 F F NA NA 3000
Ambient G E E 2000
400 F G E E 1000
-200 F F NA NA 5000
Ambient G G E 3000
500 F G E E 1500
-200 F P NA NA 350
Ambient F E G 250
500 F F E G 100
-200 F P NA NA 250
Ambient F G G 150
500 F F G G 50
-200 F F NA NA 750
Ambient G G G 500
500 F G G G 250
Ambient 3000 2000 1500 G
250 F 2500 1500 1000 G
550 F 1500 750 500 G
Ambient 3500 2000 1500 E
250 F 2500 1500 1000 E
450 F 2000 1000 750 E
Ambient 3000 NR NR P
250 F 1500 NR NR P
550 F 500 NR NR P
Ambient 10000 5000 2500 G
250 F 8000 4000 1500 G
550 F 5000 2000 1000 G
Ambient 20000 15000 10000 G
250 F 17500 10000 7500 G
550 F 8000 6000 4000 G
Ambient NA NA NA G
250 F NA NA NA G
550 F NA NA NA G
Ambient 200 1500 750 G
250 F 1500 1000 500 G
400 F 750 500 250 G
Ambient 3000 2000 1500 E
250 F 2500 1500 1000 E
450 F 2000 1000 750 E
Ambient NA NA NA NA
250 F NA NA NA NA
500 F NA NA NA NA
Ambient NA NA NA NA
250 F NA NA NA NA
500 F NA NA NA NA
Ambient NA NA NA NA
250 F NA NA NA NA
500 F NA NA NA NA
Ambient 2000 750 75 10 NR G
250 F 1000 500 50 NR NR G
550 F 250 100 NR NR NR G
Ambient 2000 750 75 10 NR E
250 F 1000 500 50 NR NR E
450 F 500 250 NR NR NR E
Ambient NR NR NR NR NR P
250 F NR NR NR NR NR P
550 F NR NR NR NR NR P
Ambient 3000 1500 150 50 NR G
250 F 2000 1000 100 NR NR G
550 F 500 250 NR NR NR G
Ambient 4500 2000 500 100 NR G
250 F 2500 1500 150 NR NR G
550 F 3000 500 NR NR NR G
Ambient 1500 500 NR NR NR G
250 F 750 250 NR NR NR G
550 F 100 NR NR NR NR G
Ambient 1500 750 100 50 NR G
250 F 750 500 50 10 NR G
400 F 500 100 10 NR NR G
Ambient 200 1000 500 50 NR E
250 F 1000 500 200 10 NR E
450 F 500 250 100 NR NR E
Ambient 250 150 50 25 10 E
250 F 150 100 25 10 5 E
500 F 100 50 10 5 2 E
Ambient 150 100 50 25 10 E
250 F 150 100 25 10 5 E
500 F 100 50 10 5 2 E
Ambient 500 200 100 50 25 G
250 F 200 150 50 75 10 G
500 F 150 100 10 10 5 G
AV1A
Standard Lip 3000 -320 to 450 G Our slant spring design is similar to AV1A but pro-vides closer control of friction or torque, greater toler-
ances and eccentricities. Also for small diameters seals and cross sections.BS1A
Radial Lip 3000 -200 to 575 E For slow dynamic and static applications only. Excellent in light gases, cryogenic, vacuum and tight
sealing available in Slant Spring designs.
AV4A
Standard Lip Extended heel
10000 -320 to 575 E Designed for greater extrusion resistance in applica-tions with high pressure up to 10,000 psi and high
temperature. Applications include pressure accumu-lators, cylinders and valve components. Also avail-
able in Slant Spring designs.AV4A
Standard LipExtreme Pressure
20000 -320 to 575 E For very high pressure cylinders or vessels requir-ing the use of an anti extrusion ring to support the
seal. Back up rings are available in high performance polymers (PEEK).AV5A
Internal &ExternalFace Seals
3000 -320 to 575 E Designed for slow rotary, static or oscillating service which requires sealing beetween two mating surfac-es; chemical tanks, vessels, swivel joints. Available in
V or slant spring designs.FV6A
FluorolipRotary Shaft Seal
2000 -65 to 400 G Shaft seal for use in pumps, motors and rotary equip-ment where a metal cased shaft seal cannot be used. The seals outer O-ring reduces or eliminates rotation
of the seal on the shaft.RS7A
Standard Flanged Seal
3000 -200 to 450 G General purpose rotary applications where the seal outer diameter is clamped axially in the seal housing
preventing rotation on the seal on the shaft.
FB2A
FluorolipSingle Lip
250 -200 to 500 G Designed for moderate to high speed applications. Recommended for combinations of speed, pressure, chemical resistance, high or low temperature and no
lubrication.SL
FluorolipDouble Lip
150 -200 to 500 G Same as SL design but with secondary lip for use as excluder for dust, water or particulates which could
migrate to sensitive areas. Also used to separate two distinct media.DLO
FluorolipDouble Lip
500 -200 to 500 E For use in higher pressure rotary service requiring additional sealing lip support. Applications include
compressors, pumps, hydrostatic clutches and transmissions.DL2S
RO
TAR
Y S
HA
FT S
EA
LSFA
CE
SE
ALS
RO
D/P
ISTO
N S
EA
LS
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Spring Design Features
Advanced is the only supplier that designs and manufactures using all three of commonly speci-fied spring types for pressure-actuated PTFE seals. We select the best spring for your applica-tion from this complete range of options. Spring load is often customized to suit exact friction or torque requirements.
Typical Spring Curves
Each spring has unique load and deflection prop-erties affect seal performance. Spring load affects friction, wear rate, and ability to seal fluids tightly. Deflection range affects seals ability to handle gland tolerances and take up seal wear.
M Cantilever Beam Spring
Moderate load and deflection range. This is an all purpose spring that is well suited for positive wip-ing action at the front edge of seal lip.Available in standard and heavy load.
W Slantcoil SpringWide deflection range with relatively constant load over the life of the seal. Available in light, medium and heavy loads. Excellent for applications requir-ing close control of friction/torque.
H Helical SpringLow deflection range with very high unit load. Used for static or slow-dynamic service where friction and wear are not a problem.
Material Description Service Temperature
Range(F)
Coefficient of Friction
Corrosion Resistance
Radiation Resistance
(Rads)
FDAApproved for Food Contact
Lubricity in Water
Light Gas Low Pres-
sure Sealing
High Pressure Extrusion
Resistance
Abrasion to Soft Shafts
Wear Resistanceat High Speeds
Rotary Recip.
Fluorolon 1000
Premium-grade virgin PTFE . For static, slow dynamic or light-duty applications. Also for food contact service requing FDA Approval.
Color:white
-125 to 450 .05 to .08 E 7 x 104 Yes F G to E F Low F F
Fluorolon 1700
Premium-grade modified PTFE. Light duty material with greater wear resistance than 1000.
Reciprocating and slow rotary applications. Color:white
-320 to 475 .05 to .08 E 7 x 104 no F G to E FLow to
morderateF F to G
Fluorolon 1034
Modified Carbon/Graphite PTFE fillers provides better wear resistance in slow to moderate
reciprocating and rotary service.Color:black
-320 to 475 .05 to .10 E 7 x 104 no F G to E F to G Low F F to G
Fluorolon 1055
Graphite-reinforced. Good wear resistance in fast-rotary applications. Less abrasive to soft
shaft on in poorly-lubricated service. Color:black
- 250 to 350 .06 to .10 E 7 x 104 no F G G Low G to E G to E
Fluorolon 1091
Graphite-reinforced blend with better extrusion resistance at higher temperatures. Excellent in reciprocating applications on hard shafts.
Color:black
- 200 to 375 .06 to .12 E 7 x 104 no F F to G G to E Moderate G to E G to E
Fluorolon 1050
PTFE Glass and MoS2 severe dry and liquid service. Excellent wear and extrusion resistance
in liquids inert gases and vacuum. Color black
-250 to 550 .06 to .12 E 7 x 104 no p F to G G to EModerate to
highE E
Fluorolon 1051
Glass and MoS2 reinfocement for extreme con-ditions such as high pressure and temperature and for longer wear life on hardened dynamic
surfaces. Color: black
-200 to 575 .08 to .12 E 7 x 104 no p F E High E E
Fluorolon 1096
Proprietary polymer filled PTFE for use in dry service. Excellent wear resistance in vacuum,
inert gases. Low abrasion to shaft.Color:tan
-200 to 350 .08 to .12 C to E 7 x 104 no F F EModerate to
highE E
Fluorolon PCTFE
Premium-grade PCTFE. High-performance fluo-roplastic for extreme cryogenic service. Excel-
lent radiation resistance with excellent chemical compatibility.
Color: translucent white
-425 to 350 .30 to .40 E 1.8 x 107 no E E G to ELow to mod-
erateF to G G
Fluorolon 5000
Virgin UHMW Polyethylene. Excellent wear and abrasion resistance at moderate reciprocating speeds, high pressure or slow rotart service.
Very good lubricity in water-based media. Color: translucent white.
320 to 250 .15 to .25 G to E 7 x 107 yes E F to G ELow to mod-
erateF E
0
5
10
15
20
20 40 60
25
30
35
SLANTCOIL
CANTILEVER
HELICAL
All values contained in the above tables are based on Advanced EMC Technologies compounds at ambient temperatures and static conditions unless otherwise stated. All values may vary depending upon the material selection. E=Excellent G=Good F=Fair P=Poor NR=Not Recommended
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Innovation in new materials development,
seal and bearing geometries, and manufacturing
processes are at work providing our customers
improved solutions to engineering problems.
Consistent, Accurate, on Time, and on Budget . . .
Advanced-EMC.com
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1095 Evergreen Circle, Suite 200
The Woodlands, Texas 77380
800 644-9770 or 713-389-5049
info@Advanced-EMC.com
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