Material: Spairal wound gasket is formed of V-shaped of W-shape stainless steel stripe and soft nonmetallic packing or the material of flexible graphite asbestos, nonasbestos, PTFE etc by means of piled. The(inner/outer) ring: Carbo steel, SS304, SS316, Monel Use temperature: -200-870ípC Use pressure: 30Mpa Application range: The static sealing element of pipe, valve, pump, thermal exchange, condensing motorcycle, auto vent-pipe, tower, plain hole and hole of flange, etc. Supplying specification: DN10-300-0mm