| Clwyd reference | ECO |
| ASTM classification | ECO |
| Typical applications | - Automotive fuel systems
- Bladders
- Diaphragms
- Rollers
|
| Advantages | - Excellent resistance to oxidation
- Good resistance to ozone and weathering
- Excellent oil resistance
- Good, stable physical properties over wide temperature range (-50°C to 150°C)
- Low gas permeability
|
| Disadvantages | - Poor compression set limits use as sealing material
- Exhibits corrosive effect on metals (limits bonding applications)
|
|
| Available hardness range (Shore A) | 40 - 90 |
| Upper continuous service temp. | 125°C |
| Min. temp. for sealing applications | -35°C |
| Minimum non-brittle temp. | -45°C |
| Tensile strength (up to) | 20 MPa |
| Elongation at break (up to) | 400% |
|
| Price Bracket | Very low |
| ASTM 1 Oil | Excellent |
| ASTM 2 Oil | Excellent |
| ASTM 3 Oil | Excellent |
| Kerosene | Excellent |
| Liquid B | None |
| Liquid 101 | Excellent |
| Phosphate ester | None |
| Ketone | None |
| Toluene | None |
| Iso-octane | Excellent |
| Methanol | Good |
| Acid (weak) | Average |
| Acid (strong) | None |
| Base (weak) | None |
| Base (strong) | None |
| Hydrogen sulphide | Good |
| Steam | None |
| Ozone | Excellent |
| Radiation | Good |
