Neoprene

(Polychloroprene)

One of the first synthetic rubbers developed in the search for oil resistant rubber. Widely used due to its combination of useful properties and comparatively low price.

Properties

  • resistant to a wide range of hostile environments
  • resistant to oils and chemicals
  • weather and water resistant
  • can withstand temperatures from -30°C to 95°C
  • easy to process and compound, offering cost benefits
  • flame retardant
  • can be produced in any colour required

Limitations

  • unsuitable for applications requiring contact with fuels
  • tendency to tear once there is initial damage
  • some Neoprenes may crystallise during storage or use causing temporary stiffening (increase in modulus/hardness). If parts are deformed during crystallisation, they may take on a set. However, crystallisation is a readily reversible phenomenon and can be removed by warming over 80°C. It can be prevented by the use of special grades.

Typical Applications

  • most general mechanical applications without contact with fuel
  • particularly useful in marine environments due to good ozone resistance.

* Neoprene is a registered trade mark of Du Pont.

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