rubber gasket 1)waterproof,abrasion-resistance,anti-oil,anti-acid 2)high and low temperature resistance 3) ... SBR,IIR,VITON.ect2.good waterproof,abrasion-resistance,anti-oil,anti-acid and anti-alkali,high and low temperature resistance,ect,so ... strong functions3.excellent resistance to ozon,oxygen,mineral,oil,synthetic hydraulic fluid,fuels,solvents&chemicals.4.certification: confirm to the ISO9001 ...