This standard BS EN 2841:2013 Aerospace series. Acrylonitrile-butadiene rubber (NBR). Mineral oil resistant. Hardness 60 IRHD is classified in these ICS categories:
49.025.40 Rubber and plastics
This European Standard specifies the properties of acrylonitrile-butadiene rubber (NBR) ), mineral oil resistant, hardness 60 IRHD, for aerospace applications.