1.Graphite,PTFE,asbestos as filler 2.Material:316,304,CS 3.Pressure:32Mpa 4.Shape:ring gasket Description:Spiral Wound Gasket Gasket Type:Basic ... used on the heat exchanger with reinforcing rib ,please not Gasket meterialsMetal ring:ss304,ss316,ss316L,ss321,inconl,other special material ...