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