Nitrile rubber is a copolymer of acrylonitrile and butadiene.
The ratio of the quantity of both the vulcanisates, and in particular resistance to oil and freeze is essential in the technology of sealing. The content of acrylonitrile in the rubber can range from 17% to 50%. With the increase in the content of acrylonitrile, rubber becomes more resistant to oils and aliphatic solvents and heat aging, with simultanous decline of its flexibility and reduced resistance to low temperatures. Vulcanisates of nitrile rubber show high flexibility, resistance to breaking, slight deformation by compression and resistance to oils.

Temperature range -30°C ÷ +100°C
Hardness (IRHD) 70,
Resistance to media
  • light fuel oils and fuels for compression-ignition engines
  • mineral oils and lubricants
  • non-combustible hydraulic fluids of HSA, I-HSB type (oil-water and water-oil emulsions) and HSC (a mixture of polyglycol and water)
  • oils of plant and animal origin
  • diluted acids and alkalis in not-too-high temperatures
  • aliphatic hydrocarbons such as propane, butane, gasoline
  • water up to 60°C (special kinds of rubber up to 100°C)