Good adhesion, a preferred adhesive material. Seal. Resistance and good ventilation. After butyl rubber, NBR than NR, SBR and BR are good. Machinery Seal. CR available metal oxides (MgO, ZnO, etc.) sulfide. NR no polar group, a non-polar rubber, only some of the resistance to polar solvents. Seal. Not dissolved in ethyl acetate, ethanol and acetone. In a non-polar solvent gasoline, benzene and the like are swollen. Oil poor solvent resistance and alkali resistance, but intolerant of concentrated acid. Shun rubber seal _ _ sealant provided by the Hengshui Shun Rubber Products Company Limited. _ _ Rubber seal Shun Shun sealant is Hengshui Rubber Products Co., Ltd. (www.hsdashun.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact phone book pages or pictures on request The latest information, contact: Guo Jingli.