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 fuelstendency 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.