Introduction：Hydrogenated Nitrile Rubber HNBR (Hydrogenated Nitrile Rubber) is a highly saturated elastomer obtained by special hydrogenation of nitrile rubber. Hydrogenated nitrile rubber has good oil resistance (good resistance to fuel oil, lubricating oil, aromatic solvents); and due to its highly saturated structure, it has good heat resistance and excellent chemical resistance (for Freon, acid and alkali have good resistance), excellent ozone resistance, high resistance to compression permanent deformation; at the same time hydrogenated nitrile rubber also has high strength, high tear performance, excellent wear resistance, etc. It is a rubber with excellent overall performance