Style HP3561

High Pressure Gasketing


Tight seal

  • 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

Chemical resistance

  • Seals aggressive chemicals in hostile environments where safety or blowout resistance is crucial*


  • Strong caustics
  • Moderate acids
  • Chlorine
  • Gases
  • Water
  • Steam
  • Hydrocarbons
  • Cryogenics
  • Aluminum fluoride (For oxygen service, specify “HP3563 for oxygen service.”)

*Consult Garlock Applications Engineering when using flanges in pressure classes above 300lbs.

Min. Temperature
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Continuous Max
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  • '+500°F (+260°C)
Max Pressure
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  • 2500 psig (172 bar)
Maximum PxT 1/16
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  • 700,000 (°F x PSIG)
Maximum PxT 1/8
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  • 450,000 (°F x PSIG)
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  • F451999A9B2E99K5M6(3,4)
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'+500°F (+260°C) 2500 psig (172 bar) 700,000 (°F x PSIG) 450,000 (°F x PSIG) F451999A9B2E99K5M6(3,4)
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