Neoprene
Neoprene (CR) has good all-round properties and resists degradation from sun, ozone and weather.
Typical applications
- Refrigeration seals
- Gaskets
- Hoses
- Car fan belts
Advantages
Disadvantages
Properties
Resistance
Advantages
- Good all-round properties
- Resists degradation from sun, ozone and weather
- Performs well in contact with oils and many chemicals
- Remains useful over a wide temperature range
- Displays outstanding physical toughness
- Resists burning inherently better than exclusively hydrocarbon rubbers
- Outstanding resistance to damage caused by flexing and twisting
Disadvantages
- Attacked by strong oxidizing acids, esters, ketones, chlorinated, aromatic and nitro hydrocarbons
- Limited flexibility at low temperatures
Properties
| Available hardness range (Shore A) | 30 – 90 |
| Upper continuous service temp | 95°C |
| Maximum Intermittent | 125°C |
| Min. temp. for sealing applications | -40°C |
| Minimum non-brittle temp | -50°C |
| Tensile strength (up to) | 23 MPa |
| Elongation at break (up to) | 450% |
Resistance
| ASTM 1 Oil | Excellent |
| ASTM 2 Oil | Good |
| ASTM 3 Oil | Good |
| ASTM Fuel B @ 40°C | Poor |
| Kerosene | Good |
| Liquid B | None |
| Liquid 101 | None |
| Phosphate ester | None |
| Ketone | Average |
| Toluene | None |
| Iso-octane | Average |
| Methanol | Excellent |
| Acid (weak) | Good |
| Acid (strong) | None |
| Base (weak) | Good |
| Base (strong) | Average |
| Hydrogen sulphide | Average |
| Steam | Average |
| Ozone | Good |
| Radiation | Good |
