Acrylonitrile butadiene rubber. The acrylonitrile component can be anything between 18 and 50%. Numerous seals for hydraulic and pneumatic devices are made from this synthetic rubber, including radial and shaft seal rings and O-rings. Not suitable for fire-resistant hydraulic fluids from the HFD group. Permissible temperature range -30°C to 100°C. Elastomers
Fluidlexikon