Style 3540

Microcellular PTFE Gasketing


Tighter seal

  • Highly compressible PTFE seals under low bolt load- suitable for many non-metallic flanges*
  • Compressible material conforms to surface irregularities, especially on warped, pitted or scratched flanges
  • Reduced cold flow and creep normally associated with conventional PTFE gaskets

Excellent chemical compatibility

  • Pure PTFE withstands a wide range of chemicals

Easy to cut and install

  • Soft PTFE can be cut easily from larger sheets, reducing inventory costs and expensive downtime


  • Strong caustics, strong acids, hydrocarbons, chlorine, cryogenics, glasslined equipment

*For flat face flanges, a minimum compressive stress of 1,500psi is recommended on the contacted gasket area for 150psig liquid service. Consult with the flange manufacturer to confirm that adequate compressive stress is available.

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Min. Temperature
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  • '-450°F (-268°C)
Continuous Max
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  • '+500°F (+260°C)
Max Pressure
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  • 1200 psig (83 bar)
Maximum PxT 1/16
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  • 350,000 (°F x PSIG)
Maximum PxT 1/8
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  • 250,000 (°F x PSIG)
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  • F419000A9B2(3)
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'-450°F (-268°C) '+500°F (+260°C) 1200 psig (83 bar) 350,000 (°F x PSIG) 250,000 (°F x PSIG) F419000A9B2(3)
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