Group R Compounds

HNBR: hydrogenated nitrile
Commercial name: Therban Bayer (Bayer AG).
The addition of hydrogen to the compound for NBR rubbers gives them excellent elastic properties, as well as resistance to mechanical stresses and abrasion and resistance to ageing. Such variations are more appreciable at high temperatures (150°C). The range of fluids with which the use of this rubber is compatible also extends.

Temperature table
Maximum temperature
Minimum temperature
Fluid compatibility table
No compatible
  • Mineral oils
  • Silicone oils and greases
  • Fluids for refrigeration
  • Aliphatic, aromatic and chlorinated hydrocarbons
  • Glycol based fluids
  • Polar solvents
  • Oxygen, Ozone, Nitrogen
The Elastotech code for this compound is: ME08XX/YY.
Elastic compound for O-rings