Neoprene O-Ring (Chloroprene Rubber) Material Description


Chloroprene (CR), also known by its trade name “Neoprene”, was one of the first successful synthetic elastomers in 1931 made by DuPont. It is prepared by emulsion polymerization of chloroprene, or 2-chlorobutadiene. CR is a multi-purposed elastomer which yields a balanced combination of properties. It performs well in contact with oils and many chemicals and has good resistance to sun, ozone and weather. It also displays outstanding toughness and good resistance to fire.

Neoprene o-rings are preferable for use with refrigerants, ammonia, water, silicone greases and oils, and high aniline point mineral oil. Neoprene o-rings are not preferable for use with aromatic hydrocarbons, ketones, esters, ethers, strong oxidizing acids, and chlorinated hydrocarbons.

Cure System, Sulfur-Cured:

Standard CRs are metal oxides and organic accelerators.

Neoprene O-Ring Temperature Range:

Standard Low Temp: -40°C (-40°F)
Standard High Temp: 100°C (212°F)

SPEC SHEET: Chloroprene Rubber (CR) 70 Durometer


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