Good adhesion, a preferred adhesive material. Resistance and good ventilation. Seal. After butyl rubber, NBR than NR, SBR and BR are good. CR available metal oxides (MgO, ZnO, etc.) sulfide. Seals. EPDM ethylene propylene rubber are ethylene and propylene as the main monomer copolymer obtained orientation. It comprises ethylene-propylene rubber (EPM) and EPDM rubber types (EPDM). o-ring _ Shun Plastic (certified) _ seal provided by the Hengshui Shun Rubber Products Company Limited. Hengshui Shun Plastic Products Co., Ltd. (www.hsdashun.com) Hebei Hengshui, industrial rubber (milk) Polystyrene leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In Shun Plastic leadership with the staff warmly welcome all inquiries negotiations to create Shun Plastic better future.