Hypalon is a chlorosulfonated polyethylene (CSPE) synthetic rubber (CSM) noted for its resistance to chemicals, temperature extremes, and ultraviolet light.
[2] Polyethylene is treated with a mixture of chlorine and sulfur dioxide under UV-radiation.
These reactive groups allow for vulcanization, which strongly affects the physical durability of the products.
[1] DuPont Performance Elastomers announced on May 7, 2009, that it intended to close its manufacturing plant in Beaumont, Texas, by June 30, 2009.
The company was therefore exiting the business for Hypalon and its related product, Acsium.