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Gylon HP3561 product style is high pressure PTFE with barium sulfate filling and a perforated 316L stainless steel insert.


  • Perforated stainless steel core increases resistance to pressure fluctuations and thermal cycling
  • GYLON® offers superior cold flow and creep resistance, eliminating the need for frequent retorquing
  • Seals aggressive chemicals in hostile environments where safety or blowout resistance is crucial
  • Will not support flame
  • Will not support bacterial growth

Service Media

  • Caustics
  • Chlorine
  • Gases
  • Water
  • Steam
  • Hydrocarbons
  • Cryogenics
  • Aluminum fluoride
  • For oxygen service, specify “HP3563 for oxygen service.”

Info When sealing uneven flanges, gasket must be four times thicker than maximum gap between flanges.

Gylon HP3561 Specifications

Min. Temperature:-450°F
Max Temperature:500°F
Max Pressure:2500 (PSI)
Maximum PxT 1/16:700,000 (°F x PSIG)
Maximum PxT 1/8:450,000 (°F x PSIG)