GYLON EPIX™ Style 3505 NSF 61 Approved Gasket

GYLON EPIX™ Style 3505 NSF 61 Approved Gasket

NSF 61 Approved Gaskets » GYLON EPIX™ Style 3505 NSF 61 Approved Gasket

GYLON EPIX™ Style 3504 is a high performance, aluminosilicate microsphere filled PTFE sheet material designed for use in many acids, some caustics, as well as hydrocarbons, refrigerants, and more. GYLON EPIX™ will provide superior functional performance by combining the traditional attributes of GYLON® with an innovative surface design. It offers a broader range of applications than traditional PTFE gaskets that are used in worn and pitted flanges. In addition, GYLON EPIX™ delivers the tight sealing and load retention properties of 1/16” (1.6mm) and the conformability of 1/8” (3.2mm). The hexagonal profile provides improved compressibility and recovery. The profiled surface reduces the contact area during initial compression to concentrate the compressive force of the flange for improved sealability.



  • NSF 61 Approved
  • One thickness does the job of two
  • Seal performance and load retention equal of 1/16”
  • Compressibility and forgiveness/conformability of 1/8”
  • Patented hex profile creates superb sealing and ability to conform to imperfect flange surfaces
  • Same material as traditional GYLON®



  • Temperature
  • Minimum:                    -450°F / -268°C
  • Ideal Operating Limit:    400°F / 204°C
  • Maximum:                   See Pressure/Temperature graph
  • Pressure
  • Ideal Operating Limit:  750 psig / 52 bar
  • Maximum:                   See Pressure/Temperature graph



  • Available in sheet or cut gasket form
  • Color: Blue
  • PTFE with aluminosilicate microspheres filler
  • Available in 3/32” (2.4mm)
  • Seal performance and load retention of 1/16 ” (1.6mm)
  • Compressibility and forgiveness/conformability of 1/8”  (3.2mm)



  • Drinking Water
  • Many acids and some caustics
  • Hydrocarbons
  • Solvents
  • Refrigerants
  • Cryogenics
  • Hydrogen peroxide


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