... . Silicone Rubber Y-ring :Detailed Product DescriptionSilicone Rubber O-ring: 1, ROHS,SGS 2, ISO9001,ISO14001; 3, Oil seals, Water Seals, Air Seals. Silicone Rubber O-rings: Silicone Rubber ... O-Rings Specification1, MaterialNBR, NR, EPDM, Silicone, SBR ...