Hydrogenated Nitrile (HNBR)
- ASTM D 2000 Classification : DH
- Temperature Range : - 30°C to 150°C
Hydrogenated Nitrile Rubber (HNBR) or Highly Saturated Nitrile Rubber (HSN) as the name suggests is a synthetic polymer made by the Hydrogenisation of Nitrile Rubber.
HNBR has better heat, chemical, oil resistance & superior physical properties when compared with standard NBR.
Acrylonitrile content (ACN) differs from 19% to 50% in HNBR. Generally for O’Rings and Seals 36% ACN content HNBR is used to achieve a balance in Low Temperature Properties & Oil/Fuel Resistance.
HNBR readily fills the gap between NBR & FKM Rubbers owing to its broad temperature range, oil resistance & superior mechanical properties.
Adnavtages
- Good resistance to Petroleum Sour Gas & Ozone
- Good Resistance to Mineral & Vegetable Oils
- Good Resistance to Hydraulic Fluids
- Good Resistance to Dilute Acids & Bases
- Good Resistance to Water & Steam
Disadnavtages
- Poor resistance to Strong Acids
- Poor resistance to Ketones
- Poor Resistance to Chlorinated Hydrocarbons
- Poor Resistance to Flame
- Poor Resistance to Esters & Ethers