Chloroprene Rubber (CR)

Chloroprene was the first synthetic rubber developed commercially and exhibits generally good ozone, aging and chemical resistance. It has good mechanical properties over a wide temperature range.

Heat resistance

• Up to approximately 121°C (250°F).

Cold flexibility

• Down to approximately -40°C (-40°F).

Chemical resistance

• Paraffin based mineral oil with low DPI, e.g. ASTM oil No. 1.

• Silicone oil and grease.

• Water and water solvents at low temperatures.

• Refrigerants

• Ammonia

• Carbon dioxide

• Improved ozone, weathering and aging resistance compared with nitrile.

Limited compatibility

• Naphthalene based mineral oil (IRM 902 and IRM 903 oils).

• Low molecular weight aliphatic hydrocarbons (propane, butane, fuel).

• Glycol based brake fluids.

Not compatible with:

• Aromatic hydrocarbons (benzene).

• Chlorinated hydrocarbons (trichloroethylene).

• Polar solvents (ketones, esters, ethers).