ISO Stainless Steel or Aluminum centering rings include an Viton or Buna-N O-ring seal and Aluminum spacer ring. They are inserted between two ISO flange faces to provide the seal when joining ISO flanges. Viton O-rings are recommended when high temperature, chemical resistance or long installed life make them beneficial. Buna-N is used when temperatures are moderate, and installed useful life is consistent with this material.
ISO Vacuum Flange Centering Ring Seals
ISO Stainless Steel or Aluminum centering rings include an Viton or Buna-N O-ring seal and Aluminum spacer ring. They are inserted between two ISO flange faces to provide the seal when joining ISO flanges. Viton O-rings are recommended when high temperature, chemical resistance or long installed life make them beneficial. Buna-N is used when temperatures are moderate, and installed useful life is consistent with this material.
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