... supply 4.OEM is ok Product: colored rubber o rings O-Ring is a kind of sealing products which is usually ... RINGMaterialNBR,HNBR,EPDM,SILICONE,VITON,NR,CR,SBR,PUHardness30-100 shore ASizeCustomized/standard/nonstandardColorRed, Black, White, Clear, etcTemperatureCommon: -20 ... Our company produce o-rings (o-ring), waterproof circle, rubber ring, silicon gasket, sealing ring, sealing gaskets, WuGuJia oil ...