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- Hydrogenated Nitrile (HNBR) Material
Hydrogenated Nitrile (HNBR)
HNBR is made via selective hydrogenation of the NBR butadiene groups which improves the temperature and ozone resistance considerably. HNBR is widely known for its physical strength and retention of properties after long-term exposure to heat, oil, and chemicals. HNBR has better heat resistance; oxidation resistance; tensile strength and abrasion resistance than standard nitrile (NBR). Also an excellent choice for automotive refrigerant service.
Both o-rings and gaskets can be made from Nitrile materials.
Names: Hydrogenated Nitrile, HNBR, HSN
| Compound Info | |
| ASTM D1418 Designation | HNBR, HSN |
| ASTM D2000/SAE J200 Type, Class | DH |
| Hardness (Shore A) | 40-90 |
| Color | green |
| Thermal Properties | |
| Standard Min Temp. | -20°F (-29°C) |
| Max Temp. | 290°F (143°C) |
Compatibility
- Chemical Resistance
- Aliphatic hydrocarbons (propane, butane, petroleum oil, mineral oil and grease, diesel fuel, fuel oils) vegetable and mineral oils and greases
- Silicone Oils
- Automatic Transmission Fluid
- Automotive refridgerants
- HFA, HFB, and HFC fluids
- Dilute acids, alkali and salt solutions at low temperatures
- NOT compatible
- Fuels of high aromatic content
- Aromatic hydrocarbons (benzene)
- Chlorinated hydrocarbons (trichloroethylene)
- Polar solvents (ketones, esters, ethers, acetones)
- Strong acids
- Glycol based brake fluids
- Ozone, weather, and atmospheric aging
Disclaimer: These are general guidelines only. All materials should be tested in your application.