Chlorosulfonyl polyethylene rubber (CSM)

What is chlorosulfonyl polyethylene rubber (CSM)?

Polyethylene, which has been chlorinated or sulphonated in some places. The exact chlorine or sulphur content has a significant influence on the properties. However, it can be said that CSM generally has a high resistance to ozone, weathering, ageing, radiation and flames. Also against
chemicals
especially oxidizing ones as well as acids and bases. The
cross-linking
usually takes place on the sulphur via metal oxides.