... 2.Vacuum performance is good 3.Different size O rings UsageMainly used for the automobile industry, because of its ... excellent performance, the main do oil seal and o-rings.Performance1.High temperature and ageing resistance.2.Vacuum performance ... gaskets ect. Item nameO ringsSizeCustomized/standard and nonstandardBrand NameO rings MaterialNBR,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFETemperatureCommon: 20 ...