ORD 5712 Parker O-Ring Material Offering Guide
AE153-75 Transmission Applications, Internally Lubed-40 to 325 Black BUTYL RUBBER (IIR) Butyl rubber (isobutylene-isoprene rubber or IIR) has a very low permeability rate and good electrical properties, but poor short-term rebound. B0612-70 Vacuum, Low Compression Set -75 to 250 Black POLYCHLOROPRENE RUBBER (CR)