rubber ring Materials include NBR, NR, SBR, IIR, EPDM, silicone, nitrile rubber Detailed Prodcut DescriptionO type rubber ring1)We can ... supply many different kinds of rubber rings and gaskets ... SBR, IIR, EPDM, silicone, nitrile rubber and Vitonorupon customers' requests3) Rubber products have good water resistant, oil, ...