Material: Spairal wound gasket is formed of V-shaped or W-shape stainless steel stripe and soft nonmetallic packing or the material of flexible graphite asbestos, non-asbestos, PTFE etc by means of piled. The(inner/outer)ring: Carbo steel, SS304, SS316, Monel Use temperature: -200-870C Use pressure: 30Mpa Application range: The static sealing element of pipe, valve, pump, thermal exchange, condensing motorcycle, autovent-pipe, tower, plain hole and hole of flange, etc. Supplying specification: D10-3000MM