epr
| EPR | |
| Common Name | EPR, EPT, EPDM, NORDEL® |
| ASTM D-2000 Classification | CA |
| Military (MIL STD 417) | RS |
| Chemical Definition | Ethylene Propylene |
| General Characteristics | |
| Durometer Range (Shore A) | 30 - 90 |
| Tensile Range (P.S.I.) | 500 - 2500 |
| Elongation (Max. %) | 600 |
| Compression Set | Good |
| Resilience - Rebound | Good |
| Abrasion Resistance | Good |
| Tear Resistance | Fair |
| Solvent Resistance | Poor |
| Oil Resistance | Poor |
| Low Temperature Usage (F°) | -20° to -60° |
| High Temperature Usage (F°) | to 350° |
| Aging Weather - Sunlight | Excellent |
| Adhesion to Metal | Fair to Good |
| Comment | |
Ethylene Propylene is a polymer with outstanding properties. It was exceptionally good weather aging and ozone resistance; excellent water and chemical resistance; excellent resistance to gas permeability, and excellent resistance to aging due to exposure to steam, and heat resistance excellent up to 350°F. Ethylene Propylene is a polymer where oil and solvent resistance is poor, however, it is fairly good in ketones and alcohols. It is not recommended for food applications or exposure to aromatic hydrocarbons. |
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