Group M compounds

CSM: chlorosulphonal polyethylene
Commercial name: Hypalon (Du Pont).
These rubbers present an excellent resistance to the factors that accelerate ageing, a good level of electrical insulation and a reasonable resistance to breakage. The presence of chlorine makes the rubber flame resistant and gives it self-extinguishing properties. It is not suitable for use in contact with many fluids of mineral origin, but resists well to contact with acids, base chemicals and many oxidative agents.

Temperature table
Maximum temperature
Minimum temperature
Fluid compatibility table
No compatible
  • Glycol based fluids
  • Aliphatic hydrocarbons
  • Organic and inorganic acids
  • Silicone oils and greases
  • Water
  • Oxygen, Ozone
  • Aromatic mineral oils
  • Aromatic and chlorinated hydrocarbons
  • Glycol based oils
The Elastotech code for this compound is: ME16XX/YY.
Elastic compound for O-rings