A spiral wound gasket having multiple windings of spirally wound strips of metal, fire resistant compressible filler material and oxidizer resistant compressible filler material is disclosed. The fire resistant filler material is arranged in a region toward the outside periphery of the gasket and the...http://www.google.fr/patents/US5527047?utm_source=gb-gplus-shareBrevet US5527047 - Fire safe spiral wound gasket with expanded PTFE and graphite windings
Fire safe spiral wound gasket with expanded PTFE and graphite windings
