Gylon® Style 3545 – Microcellular PTFE

Microcellular PTFE with rigid inner core


  • Tighter seal
  • Highly compressible PTFE outer layers seal under low bolt load- suitable for many non-metallic flanges*
  • Compressible layers conform to surface irregularities, especially on warped, pitted or scratched flanges
  • Rigid PTFE core reduces 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
  • Rigid PTFE core facilitates installation, especially on large diameter flanges and hard-to-reach areas


  • Strong caustics, strong acids, hydrocarbons, chlorine and cryogenics. Conforms to FDA regulations.

* 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.

  • Min. Temperature: -450° F (-268°C)
  • Max. Temperature: 500°F (260°C)
  • Max. Pressure : 1200 (PSI)
  • Maximum PxT 1/16: 350,000 (° F x PSIG))
  • Maximum PxT 1/8: 250,000 (° F x PSIG)
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