Rubber Elastomers
H-NBR is an elastomer based on hydrogenated acrylonitrile-butadiene rubber, which can be used in aliphatic hydrocarbon (i.e. propane, butane) and mineral oils and lubricants (short time up to 170°C), also for raw petroleum which contains hydrogen sulfide. H-NBR also can be used in diluted acids and alkali, saline, even at high temperatures and in water-glycol composition. H-NBR is not compatible with fuels, which are high in aromatic hydrocarbons (composition of premium gasoline), petrol ketones (fuel- spirituous compositions), esters, ethers and chlorinated hydrocarbons (i.e. trichloroethylene and tetrachlorethylene).
In comparison with NBR, H-NBR has better mechanical properties, such as conventional tensile strength, relative elongation at break and abrasion resistance. The temperature range is much wider (from -25°C up to +150°C; short time up to 170°C). This material has a high ozone, weather and ageing resistance. Swelling in mineral oils is low, but depends very much on the composition of the oil. The compatibility with oils, which have a high percentage of additives, is much better than NBR.
Good resistance – Mineral oils and grease
H-NBR is mainly used in cases, wh ere high fuel and mineral oil resistance, high elasticity at high temperatures in oil with a high percentage of additives, are required. (I.e. FPM substitute).
For example: motor seals and gearbox seals in automotive industry; seal parts for petroleum and natural gas production industry.
- Rotary seals, seals for automotive technologies
- O-rings