Chlorosulfonated polyethylene is produced through the chemical treatment of polyethylene with gaseous chlorine and sulphur dioxide. The stiff, thermoplastic polyethylene becomes a flexible, vulcanizable rubber. Analogue to the chloroprene rubber (CR) the chlorine in CSM rubber leads to a good flame resistance and good mineral oil resistance. CSM is marketed by DuPont under the trade name “Hypalon”.
CSM is for Shore-hardness Shore A 45-90 available.
Areas of application: Cable coatings, acid resistant hoses, container coverings, seals, membranes.