HNBR stands for Hydrogenated Nitrile Butadiene Rubber. It is many a times also called as Highly Saturated Nitrile or HSN. The prime reason for its use in the industry that operates in the harsh environment is that this type of material is known to retain its physical and chemical properties as well as strength and rigidity when exposed to long term heat exposure, chemicals or any other harsh environmental conditions.

HNBR is popular in industries simply because of it has the ability to retain its physical and chemical properties as well as strength and rigidity when exposed to heat, chemicals or any other harsh environmental conditions. When measured at 23 degree Celsius, the tensile strength of HNBR is in the range of 20 to 31 MPa. This material can be easily compounded with other materials and thus makes it feasible to be used in temperatures ranging from -40 to 165 degree Celsius.

When the material has to be used in low temperatures, the ACN grade compound from HNBR can be used whereas if the material has to be used in high temperatures, a highly saturated HNBR grades with white fillers should be used. As a group, HNBR elastomers have excellent resistance to common automotive fluids (e.g., engine oil, coolant, fuel, etc.) and many industrial chemicals.