Hydrogenated Nitrile was specifically developed to offer increased temperature and fuel resistance compared to traditional Nitrile (NBR) materials. HNBR compounds also have excellent abrasion, wear, and compression set resistance. Poor resistance to aromatic or chlorinated hydrocarbons, fuels and solvents.
Service Temperature Range
Resistances
Low Temp. Range, °F Abbv. High Temp. Range, °F Compr. Set Oils Steam Weather/
UV
Fuels Acids/
Solvents
Bases Abrasion Wear Permeation
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  • Excellent
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  • Poor
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General purpose, commodity grade compound. 
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Common Names:

HNBR (Hydrogenated acrylonitrile butadiene rubber), Hydrogenated Nitrile.

Trade Names:

Therban®, Zetpol®

General Description:

Hydrogenated Nitrile was specifically developed for increased temperature resistance and better compatibility with new automotive fuels. Hydrogenated Nitrile also offers higher strength and minimal degradation at high temperatures. Specific physical and chemical resistances vary by compound formulation.

Features:

  • Compatible with Freon R-134a and compressor lubricant oil.
  • Extended temperature capabilities.
  • Enhanced chemical compatibility with new automotive fuels.
  • Good/Excellent resistance to compression set and tear/abrasion.
  • Good/Excellent resistance to many petroleum oils/greases, H2S, hydraulic fluids, alcohol, ambient water, silicone greases, Di-ester base lubricants, CO2 and ethylene-glycol based fluids.

Limitations:

  • Ozone, direct sunlight, UV, weathering, aromatic fuels, glycol-based brake fluids, polar solvents, non-flammable hydraulic fluids (HFD), aromatic/chlorinated hydrocarbons, ketones, esters, and aldehydes.

Service Temperature:

  • -40° to 150° C (-40° to 300° F)