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TURBINE SEALS

LUBRICATIONAND BEARING

PROTECTION FOR

STEAM TURBINES

ISOMAGISOMAG

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IS LEAKING STEAM

GETTING INTO YOURTURBINE OIL ?

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HOW FREQUENTLYDO YOU NEED TO

DRAIN WATER FROMYOUR TURBINE OIL ?

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DO CARBON BOXESEVER LEAK STEAM ?

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LABYRINTH SEALSDO NOT SEAL STEAM

FROM YOUR OIL

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WOULD TURBINEBEARINGS LAST

LONGER WITHOUTSTEAM & WATER

CONTAMINATION ?

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HH22O + OIL = SLUDGEO + OIL = SLUDGE

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CONTAMINATINGTURBINE OIL

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THE PROBLEMTHE PROBLEM

High pressure steam is trying to escape past thecarbon rings in the carbon boxes.

Carbon rings wear and progressively leak more.

Labyrinth bearing seals only slow down the

leaking steam, they will not stop it.

Leaks from the carbon box are adjacent

to and directed at the labyrinths.

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HIGH PRESSURE

STEAM

OIL

CARBON BOXES

BEARING SEALS

BEARING SEAL

OIL

TYPICAL TURBINETYPICAL TURBINE

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TYPICAL I.D. ONE PIECETYPICAL I.D. ONE PIECEOEM LABYRINTHOEM LABYRINTH

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TYPICAL O.D. ONE PIECETYPICAL O.D. ONE PIECEOEM LABYRINTHOEM LABYRINTH

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TYPICAL TWO PIECETYPICAL TWO PIECEREPLACEMENT LABYRINTHREPLACEMENT LABYRINTH

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FLAT FACEFLAT FACEMECHANICAL SEALMECHANICAL SEAL

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SEALING CHOICESSEALING CHOICESONE PIECE

LABYRINTH OPEN LEAK PATH

MECHANICAL SEAL

TWO PIECE

LABYRINTH OPEN LEAK PATH

NO LEAK PATH

TOTALLY SEALED

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FLAT FACEFLAT FACEMECHANICAL SEALSMECHANICAL SEALS

PROVEN TECHNOLOGY

PRECISION LAPPED SEALING FACES

HERMETIC SEALING

LOW FRICTION

NO SHAFT FRETTING

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ISOMAGISOMAGTechnology leader in

precision flat face

sealing and protection ofindustrial bearing and

lubrication systems

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ISOMAGISOMAG

HOW TOHOW TO

SELECTSELECT

TURBINE SEALSTURBINE SEALS

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TYPICAL HORIZONTALTYPICAL HORIZONTALSPLIT CASE TURBINESPLIT CASE TURBINE

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HIGH PRESSURE

STEAM

OIL

CARBON BOXES

BEARING SEALS

BEARING SEAL

OIL

NEEDS 3 SEALSNEEDS 3 SEALS

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1. Drive end1. Drive end OUTBOARDOUTBOARD

2. Drive end2. Drive end INBOARDINBOARD3. Governor end3. Governor end INBOARDINBOARD

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Different turbine housingsDifferent turbine housings3 most common configurations3 most common configurations

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ISOMAGISOMAG

MAGNUM-S

CARTRIDGE SEAL

RSA

COMPONENT SEAL

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MAGNUMMAGNUMS Cartridge SealS Cartridge Seal

Built to fitBuilt to fit MALEMALE && FEMALEFEMALE turbineturbine

housings and standard cross sectionhousings and standard cross sectionstraightstraight STRAIGHTSTRAIGHT housings.housings.

RSA Component SealRSA Component Seal

Compact cross section for narrow crossCompact cross section for narrow cross

sectionsection STRAIGHTSTRAIGHT housings.housings.

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INSIDE THE MAGNUMINSIDE THE MAGNUM--SS

CARTRIDGE SEALCARTRIDGE SEAL

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MAGNUMMAGNUM -- S MALE FITS MALE FIT

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MALE HOUSINGMALE HOUSING

SEALS FIT HERE

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MAGNUMMAGNUM -- S FEMALE FITS FEMALE FIT

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MAGNUMMAGNUM -- S FEMALE FITS FEMALE FIT

MAGNUM-S

DRIVE END

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INSIDE THE RSAINSIDE THE RSA

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RSA INSIDE FITRSA INSIDE FIT

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STRAIGHT HOUSINGSTRAIGHT HOUSING

SEALS FIT HERE

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RSA withRSA withSTEAM DEFLECTORSTEAM DEFLECTOR

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RSA & STEAM DEFLECTORRSA & STEAM DEFLECTOR

STEAM DEFLECTOR

RSA SEAL

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RSA OUTSIDE FITRSA OUTSIDE FIT

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STEAM DEFLECTORSSTEAM DEFLECTORS

A steam defector is a metal disc attached to the shaft

and located between the carbon box and the seal. It isnormally constructed of 416 or 17-4ph low expansion

stainless steel. The deflector is manufactured to heat

shrink to the turbine shaft with an inside diameter .002

to .003 smaller than the shaft diameter.

Use a steam deflector when the steam leaking from

the carbon box is in excess of 300 degrees F.

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MEASURE IT RIGHTMEASURE IT RIGHT

3 DECIMAL PLACES

.001 INCH

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RECORD THE DIMENSIONSRECORD THE DIMENSIONS

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ISOMAGISOMAG

HOW TOHOW TO

INSTALLINSTALLTURBINE SEALSTURBINE SEALS

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1. Smooth sharp edges from keyways and steps.

2. Lightly lubricate rotor o-ring.

3. Slide seals into position on shaft.

SMOOTH EDGES

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4. Lift rotating assembly5. Lower rotating assembly into lower housing while

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6. Guiding seals into position

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7. RSA seal only, gently push rotor up to the

stationary (you will feel the magnets pull the

rotor and stationary together)

8. Finish turbine assembly

9. You are finished

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Seals Out Contaminants

Seals In Lubrication

Stops thermal cycle aspirationof air and vapor into bearings

Maximum Sealing = Maximum Protection

ISOMAGISOMAG

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Turbines do not have toTurbines do not have tolook like thislook like this