| Common Name - Base Polymer |
Natural Rubber |
Natural Rubber |
| Chemical Name |
Polyisoprene |
Polyisoprene |
Material Designation
(ASTM D-2000
- SAE J200 Classification) |
AA |
AA |
| ASTM D-1418 Designation |
NR |
NR |
| Tensile Strength (psi) |
Over 3000 |
Over 3000 |
| Hardness Range (Durometer A) |
30-90 |
30-90 |
| Adhesion to Metals |
Excellent |
Excellent |
| Adhesion to Fabrics |
Excellent |
Excellent |
| Tear Resistance |
Very Good |
Very Good |
| Abrasion Resistance |
Excellent |
Excellent |
| Compression Set |
Excellent |
Excellent |
| Cold Resilience |
Excellent |
Excellent |
| Hot Resilience |
Excellent |
Excellent |
| Dielectric Strength |
Excellent |
Excellent |
| Electrical Insulation |
Good to Excellent |
Good to Excellent |
| Impermeability to Gases |
Good |
Good |
| Dilute Acid Resistance |
Fair to Good |
Fair to Good |
| Concentrated Acid Resistance |
Fair to Good |
Fair to Good |
Solvent Resistance
- Aliphatic Hydrocarbons |
Poor |
Poor |
Solvent Resistance
- Aromatic Hydrocarbons |
Poor |
Poor |
Solvent Resistance
- Oxgenated (Ketones etc.) |
Poor |
Poor |
Solvent Resistance
- Lacquer Solvents |
Poor |
Poor |
| Resistance To Oil and Gasoline |
Poor |
Poor |
| Resistance To Water Absorption |
Very Good |
Very Good |
| Resistance To Oxidation |
Good |
Good |
| Resistance To Ozone |
Poor |
Poor |
| Resistance To Sunlight Aging |
Poor |
Poor |
| Resistance To Heat Aging |
Fair |
Fair |
| Resistance To Low Temperature |
Very Good |
Very Good |
| Resistance To Flame |
Poor |
Poor |
| Resistance To Vegetable Oil |
Poor |
Poor |
| Resistance To Chlorinated Hydrocarbons |
Poor |
Poor |
