Good oil resistance (good resistance to fuel oil, lubricating oil, aromatic solvents); And has good heat resistance, chemical corrosion resistance, ozone resistance, good compression set ; at the same time, it also has the characteristics of high strength, high tear performance, excellent wear resistance and so on. It is one of the rubber with excellent comprehensive characteristic. Especially used in hCFC-134A and CFC-12 refrigerant systems. HNBR compared to NBR In addition to inheriting NBR characteristic Improved the heat resistance. Improved the ozone resistance. Improved the tensile strength.