Chlorosulphonated Polyethylene Rubbers (CSM)

Chlorosulphonated Polyethylene Rubber (CSM) appears as a white to light amber elastomer with excellent resilience and flexibility across a wide temperature range. Key features include exceptional aging properties, excellent resistance to UV and ozone degradation, good acid and base resistance, and the ability to accept high filler loadings while maintaining properties. CSM finds extensive applications in automotive and industrial hoses, electrical cable jacketing, roofing membranes, and chemical protective equipments. 

Alternatives to CSM include EPDM and CR (neoprene). The industry is trending toward developing grades with improved processability and reduced environmental impact. Various grades exist with different chlorine and sulfur content levels, affecting properties such as oil resistance, flame retardancy, and elasticity. Specialty formulations include peroxide-curable systems for improved compression set resistance, high-temperature grades for automotive applications, and flame-retardant versions for wire and cable applications.