UNE-EN 3697:2013 Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant - Hardness 60 IRHD (Endorsed by AENOR in March of 2013.)
2013UNE-EN 3697:2013 Aerospace series - Acrylonitrile-butadiene rubber (NBR) - Low temperature resistant - Hardness 60 IRHD (Endorsed by AENOR in March of 2013.)