Rubber O RingsItem No.: HDM093Material: Silicone, NBR, SBR, EPDM, NR, FKM, VITON, Neoprene, HNBR, etcSize: customized or standardColor: Black, Green, Clear ... ’s requestDescription:Description of Rubber O RingsNanjing Hyderman Rubber & Plastic Co., Ltd Specializes in molded rubber products , we can ... Item: Rubber O Rings, X-Rings, V-Rings, D-Rings, any shape rings per your design.2) Hardness: From 20 ...