HNBR o-rings are made from hydrogenated nitrile specifically designed to provide superior temperature and fuel resistance compared to traditional NBR materials. HBNR o-rings also feature excellent abrasion, wear, and compression set resistance, making them a reliable o-ring in a wide range of tough applications. has one of the world's largest inventory networks of HNBR o-rings and extensive network of made on demand manufacturers. Try our easy-to-use online ordering system to order HNBR orings available online and ready to ship today.

Service Temperature Range
Low Temp. Range, °F Abbv. High Temp. Range, °F Compr. Set Oils Steam Weather/
Fuels Acids/
Bases Abrasion Wear Permeation
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  • Excellent
  • Moderate
  • Poor
  • Specialty Compounds Only


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Popular Allorings Compounds
Compound Relative
Low Temp ° F High Temp ° F Durometer Color Special
View Datasheet Relative Price: 2 Relative Availability: 3 -30  325  70  Green 
General purpose, commodity grade compound. 
View Datasheet Relative Price: 2 Relative Availability: 3 -30  325  70  Black 
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.


  • 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.


  • 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)