NBR - resistant to chemicals
What is acrylonitrile butadiene rubber (NBR)?
Acrylonitrile-Butadiene Rubber (NBR) is a synthetic rubber that is particularly resistant to oils, fuels, and many chemicals. The hardness, flexibility, and media resistance can be precisely adjusted by varying the acrylonitrile (ACN) concentration. NBR is therefore one of the most important materials for Molded Rubber and connections such as Metal Composite Parts (e.g. seals and hoses in oil-containing environments).
What are the properties of acrylonitrile butadiene rubber (NBR)?
- Excellent resistance to mineral oils, greases and many aliphatic hydrocarbons
- High mechanical strength and good abrasion resistance
- Low compression set for permanent sealing effect
- Temperature resistance from approx. –45 °C to +110 °C
- Good adhesion in Rubber-metal composite parts
- Restrictions on ozone, UV and weather resistance without protective additives
What areas of application & material combinations of acrylonitrile butadiene rubber (NBR) are there?
Thanks to its media resistance, NBR is widely used: O-rings, Sealing lips, Grommets, diaphragms, fuel hoses, Vibration dampers and various rubber-metal composite parts in the automotive, hydraulic, and mechanical engineering industries. For permanent outdoor use, a protective coating should be applied to prevent embrittlement caused by UV radiation. A common alternative in this case would be EPDM.
