rubber ring Materials include NBR, NR, SBR, IIR, EPDM, silicone, nitrile rubber Detailed Prodcut DescriptionO type rubber ring1)We can supply many different kinds ... NBR, NR, SBR, IIR, EPDM, silicone, nitrile rubber and Vitonorupon customers' requests3) Rubber products have good water resistant, oil, high/low ... physical properties8) Green product9) Available in various sizes and colors5 rubber gasket