Neoprene Polychloroprene (CR)
Neoprene (CR) offers a versatile balance of chemical, oil, and weathering resistance, making it one of the most widely used synthetic rubbers. Mountville Rubber can mix custom CR compounds designed for gasketing, sealing, and protective products that must withstand demanding environments. With strong resilience to ozone, sunlight, and moderate chemicals, Neoprene remains a trusted material for industrial equipment, construction seals, and automotive components.
Available in sheets, slabs, and strips.
Abbreviation:
CR
ASTM D-2000 Classification:
BC, BE
Chemical Definition:
Polychloroprene
Physical & Mechanical Properties
- Durometer or Hardness 20 - 95 Shore A
- Tensile Strength 500 - 3000 PSI
- Elongation % 100% - 800%
- Abrasion Resistance Very Good to Excellent
- Adhesion to Metal Excellent
- Adhesion to Rigid Materials Good to Excellent
- Compression Set Poor to Good
- Flex Cracking Resistance Good
- Impact Resistance Good to Excellent
- Resilience/Rebound Fair to Good
- Tear Resistance Good to Excellent
- Vibration Dampening Good to Excellent
Thermal Properties
- Low Temperature -70° F to -30° F
- Minimum for Continuous Use (static) -80° F
- Brittle Point -80° F
- High Temperature +200° F to 250° F
- Maximum for Continuous Use (static) +250° F
Environmental Performance
- Colorability Fair
- Flame Resistance Fair to Good
- Gas Permeability Fair to Good
- Odor Fair to Good
- Ozone Resistance Good to Excellent
- Oxidation Resistance Good to Excellent
- Radiation Resistance Fair to Good
- Steam Resistance Fair to Good
- Sunlight Resistance Good to Excellent
- Taste Retention Fair to Good
- Weather Resistance Fair to Good
- Water Resistance Fair to Good
Chemical Resistance
- Acids, Dilute Excellent
- Acids, Concentrated Poor
- Acids, Organic (Dilute) Good to Excellent
- Acids, Organic (Concentrated) Poor to Good
- Acids, Inorganic Good to Excellent
- Alcohols Excellent
- Aldehydes Poor to Fair
- Alkalies, Dilute Good
- Alkalies, Concentrated Poor
- Amines Poor to Good
- Animal & Vegetable Oils Good
- Brake Fluids, Non-Petroleum Based Fair
- Diester Oils Poor
- Esters, Alkyl Phosphate Poor
- Esters, Aryl Phosphate Poor to Fair
- Esters Poor
- Fuel, Aliphatic Hydrocarbon Poor to Good
- Fuel, Aromatic Hydrocarbon Poor to Fair
- Fuel, Extended (Oxygenated) Fair
- Halogenated Solvents Poor
- Hydrocarbon, Halogenated Poor
- Ketones Poor to Fair
- Lacquer Solvents Poor
- LP Gases & Fuel Oils Good
- Mineral Oils Fair to Good
- Oil Resistance Fair
- Petroleum Aromatic Good
- Petroleum Non-Aromatic Good
- Refrigerant Ammonia Excellent
- Refrigerant Halofluorocarbons R-11, R-12, R-13, R-21, R-22
- Refrigerant Halofluorocarbons with Oil R-11, R-12, R-22
- Silicone Oil Fair to Excellent
- Solvent Resistance Fair
