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Styles 7537

PTFE Gasket Material

This gasket material is made with 100% Virgin PTFE and uses Silica as the filler.

This PTFE sheet is manufactured by a unique process that structures the composition into fibers that overcome creep relaxation and/or cold flow.  Cold flow is a problem associated with plain PTFE sheet.


pH Range
0 - 14

Max. Pressure
1200 psig (83 bar)

-350°F (-210°C) to +500°F (+260°C)

P x T Max.   PxT = PSI x °F (Bar x °C)
350,000 (12,000)
250,000 (8600)

It is suitable for services with high pressures and temperature, especially in chemical processing and hydrocarbon plants in strong acids (except hydrofluoric), solvents, hydrocarbons, water, steam and chlorine.

 Typical Physical Properties
Test Method Physical Property Style 7536
ASTM F 36A Compressibility Range @ 5000 psi

Recovery @ 5000 psi

7 12%


ASTM F 37A Sealability .2 ml/h
ASTM F38 Creep Relaxation 18%
ASTM 152 Tensile Strength 14 Mpa
ASTM D 792 Specific Gravity 2.10 g/cm3
DIN 3535 Sealability <.015 cm3/min

ASTM tests are based on 1/32" sheet thickness and DIN test is based on 1/16" sheet thickness.
Gauge 1/16", 1/8"
Sheet Size 59" x 59"
Phelps Industrial Products, Inc., 6300 Washington Boulevard, Elkridge, Maryland 21075-5397