Hydrogenated Nitrile (HNBR)

HNBR is produced through the selective hydrogenation of NBR (aka Nitrile, Buna-N), resulting in varying degrees of saturation of the polymeric chain, and varying degrees of enhanced physical strength and chemical resistance properties. The result is a material that does not react as easily to oxygen and is thus significantly more heat resistant than NBR. In addition, HNBR offers better wear behavior in dynamic applications.

Features & Benefits

  • Similar physical properties to Nitrile, but with:
    • Better heat resistance
    • Better oxidation resistance
    • Higher tensile strength
    • Better abrasion resistance


Standard Color:            Green
Min. Temperature:    -20°F  (-29°C)
Max. Temperature:   +290°F  (143°C) 
Hardness (Shore A):    40 to 90

Disclaimer: These are general material guidelines.  All application data should be submitted in order to specify the correct material for your application.  All materials should be tested in your application.


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