... ring ship. It is generally used to seal the fluid liquid or gas, often works as a part of the ... main material contains: NR, CR, NBR, SBR, VITON, SILICON, HNBR,etc.square ring rubber Item namesquare ring rubberMaterialNBR,HNBR,EPDM,SILICONE,VITON ... ODMwelcomeOur company produce o-rings (o-ring), waterproof circle, rubber ring, silicon gasket, sealing ring, sealing gaskets,such as the professional ...