Semi-Metallic Gaskets

Defender HF™ Gaskets

Over prolonged periods in HF acid service, flange faces can become pitted and damaged due to corrosion around the flange bore. The Defender® HF gasket has an integral and unique Kammpro® metallic core designed to offer high integrity primary and secondary sealing components across the flange face all the way to the bore where traditional gaskets are not a reliable solution. Construction materials are generally dictated by the customer’s own piping classifications and the process design specifications.

  • Gasket type: F
  • Retainers: Monel, low carbon steel core options
  • Seal element: Kammpro core and outer locating ring/APX2 flexible graphite and L-120 ePTFE covering layers
  • Pressure class: ANSI(150#-2500#), API (2-10K), PN (20-420)
  • Optional carbon steel guide ring or integral Monel guide ring