Hypalon® (CSM)

A chlorosulfonated polyethelyne, Hyplon® offers outstanding resistance to attack by oxygen and ozone, high resistance to degradation by corrosive chemicals, good to excellent heat resistance, and fair for excellent oil resistance.

Key Use:

: For resistance to corrosive or oxidizing chemical (acid & alkalis). For enhanced weather resistance (when compounded with protective pigments). For resistance to Freon refrigerants (when compound with a high chlorine content).

Working Temperature Range: - 50 °F to + 275 °F. (Dry Heat Only).


  • Depending upon chlorine content, the heat resistance and low temperature flexibility properties of Hyplon® compound can be widely varied to meet specific application needs.
  • At low chlorine level, Hyplon® compound exhibit their best heat resistance and low temperature flexibility properties, with fair oil resistance. At high chlorine level, hypalon compound features excellent oil resistance, with less heat resistance and less low temperature flexibility.
  • In general, hypalon compound are highly resistance to degradation by corrosive chemical, and are very resistant to oxidation. Taken as a group, CSM compounds are more resistant to corrosive and oxidizing chemicals than are Chloroprene or Nitrile. They are also considerate be tougher than silicone or Ethylene-propylene elastomers.

Note: Hyplon® is a Registered Trade Mark of DuPont Dow Elastomers