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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).

Parker Hannifin
O-Ring & Engineered Seals
2360 Palumbo Drive
Lexington, KY 40509
Ph: 859-269-2351
Fax: 859-335-5128