steel flat gasket 2.5mm-80mm CS&AS&SS&Rubber ISO9001:2000,API, ... steel flat gasketType: Spiral wound gasket, oval RTJ, Octagonal RTJ, Lens gasket, corrugated gasket, Camprofil gasket, Double jacket gasket1)Spiral wound sealing gasket is devided into A ... ,B,C,D four styles 2)Material:tinplate/304/316+graphite ...