... , SBR, VITON, SILICON, HNBR,etc.square ring rubber Item namesquare ring rubberMaterialNBR,HNBR,EPDM,SILICONE,VITON,NR,CR,SBR,PUHardness30-100 shore ... daysOEM/ODMwelcomeOur company produce o-rings (o-ring), waterproof circle, rubber ring, silicon gasket, sealing ring, sealing gaskets,such as the ... and the best price to you . 3)material: silicone ,rubber ,vt ,EPDM,HNBR ,etc. 4)sample lead time 5-7 days 5 ...