PROPERTIES:

Chlorosulfonated polyethylene (CSM, CSPE) is widely known as Hypalon®.1 It can be considered a superior type of chloroprene, having better heat and chemical resistance.
CSM grades usually contain 20 – 45 percent chlorine which provides excellent resistance to ozone, UV, weathering, and chemicals. This includes oxidizing agents, hot water (when cured) and corrosive chemicals. It also has good resistance to dry heat up to 150°C, low flammability, low gas permeability, and good electrical properties. However, it has poor/fair fuel resistance and its low temperature properties are generally limited, depending on the chlorine content of the CSM grade. Furthermore, its compression set is rather low.

APPLICATIONS:

CSM elastomers are generally useful in electrical applications and as protective coatings against corrosive environments. Its excellent UV stability makes it also useful as a material for outdoor applications Typical applications include acid resistant tank linings, pond liners, static seals, roof sheeting, membranes, fabrics, hoses and electrical cable jacketing.
The typical working temperature range is between -20°C and +125°C.