HNBR is the product of the hydrogenation of Nitrile rubber, resulting in varying degrees of saturation of the polymeric chain, along with a range of enhanced physical strength and chemical resistance properties.
Oil resistant applications, including exposure to such oil additives as detergents, antioxidants and anti-wear agents.
Exposure to oil soured with metal sludge.
Seals for oil well applications.
Seals for automotive fuel handling systems.
Seals for general industrial usage.
Standard Compound: -30°F to +300°F. (Dry Heat Only)
Special Compounds: -76°F to +347°F.
Hardness (Shore A)
50 to 90
Like Nitrile, increasing acrylonitrile content improves oil resistance at a cost of reduced low temperature performance.
Saturation of polymer chains improves ozone and weathering resistance.
Higher physical properties are good for downhole applications where high pressure is used.
Like Nitrile, HNBR is not recommended for exposure to ethers, esters, ketones, or chlorinated hydrocarbons.