White Max Handhole Gaskets (6-Pack)
White Max Handhole Gaskets (6-Pack)
White Max Handhole Gaskets (6-Pack)
White Max Handhole Gaskets (6-Pack)

White Max Handhole Gaskets (6-Pack)

Regular price$141.79
Shipping calculated at checkout.

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  • Inventory on the way


White Max Boiler Gaskets Pure PTFE, FDA compliant

Description: (All gaskets are 1/8″ thick)

Lead Time: Most sizes IN STOCK. 2-3 day lead time on others.

  • High adaptability, suitable for flanges with corrosion and with uneven sealing surface
  • Pressure test and service with the same gasket
  • Very easy installation and removal
  • Anti-sticking material, the low effort for surface cleaning when installing a new gasket
  • No embrittlement of the gasket in storage or in service
  • Pure PTFE, conforms to FDA standards
  • Clean Steam Applications


  • Temperature Minimum -450°F (-268°C)
  • Temperature Maximum/Spike 500°F/600°F (260°C/315°C)
  • Pressure Full Vacuum to 3000 psi (206.8 bar)
  • pH 0-14 (Except molten Alkali Metals and Elemental Florine)
  • Compressibility (ASTM F36) 55-62%
  • Recovery (ASTM F36) 12%
  • Creep Relaxation (ASTM F38) 32% @ 212°F 16% @ 73°F
  • Sealability (ASTM F37B) ASTM Fuel A 0.00 ml/hr, Nitrogen 0.02 ml/hr
  • Gas Permeability (DIN 3535) 0.00 cc/min
  • Ignition Loss (ASTM F495) 30%
  • Density 0.85 g/cm³

WHITE-MAX® gaskets are specially designed for inspection ports of boilers and tanks. They provide reliable sealability with this low stress and exceptional dimension stability. This form of gasketing is processed by expanding 100% pure polytetrafluoroethylene (PTFE). The result is a bidirectional, soft, highly compressible gasket for longer life and trouble-free sealing. Its form-in-place versatility is perfect for sealing boilerplates that are worn, warped, or scored. The high compressibility of the WHITE-MAX® gasket enables it to effectively fill flange imperfections for a tight, leak-free seal. Unlike conventional PTFE which is prone to cold flow, WHITE-MAX® has good creep resistance and bolt torque retention properties.

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