... Oil seals, Water Seals, Air Seals. Silicone Rubber Y-ring :Detailed Product DescriptionSilicone Rubber O-ring: 1, ROHS,SGS 2, ISO9001 ... 3, Oil seals, Water Seals, Air Seals. Silicone Rubber O-rings: Silicone Rubber O-Rings Specification1, MaterialNBR, NR, EPDM, Silicone, SBR ... getting the deposit if mould available;13days after getting the deposit if need to develop new mould. Silicone Rubber Y-ring