... SBR EPDM.CR,NR,NBR,silicone,viton Type:gasket size: any design rubber gaskets and seals ,gasket sheet,gasket setmaterial ... proof ,anti-corrosion gas, prevent the leak of othe gas.Viton rubber gasket1.hardness 55-85+/-5 shore A2.tensile ... 12.5Mpa3.density 1.9g/cm34.elongation 300%Viton rubber gasketMaterialViton,epdm,nbr,siliconeColorAny color will be avaliableSizeCustomizedCertificationISO9001- ...