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Natural Rubber (NR) > > |
| Abbreviation |
NR |
| Common Name |
Natural Rubber |
| ASTM D-2000 classification |
AA |
| Military(Mil-Std417) |
RN |
| Chemical Definition |
Polyisoprene |
| General Characteristics |
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| Durometer-Range (Shore A) |
30-90 |
| Tensile Range (P.S.I) |
500-3500 |
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| Elongation (Max.%) |
700 |
| Compression Set |
Excellent |
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| Resilience-Rebound |
Excellent |
| Abrasion Resistance |
Excellent |
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| Tear Resistance |
Excellent |
| Solvent Resistance |
Poor |
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| Oil Resistance |
Poor |
| Low Temperature Usage (°F) |
-20° to -60° |
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| High Temperature Usage (°F) |
to 175° |
| Aging Weather-Sunlight |
Poor |
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| Adhesion To Metals |
Excellent |
Feature
Advantage:
- High resilience.
- Good compression set.
- Food roll building behavior and molding properties.
- Good friction surface, but not a fine smooth surface when ground.
- High tear strength.
- Low crack growth.
- Good low temperature.
- Usable for ketones and alcohol.
- Good low temperature properties.
Disadvantage:
- Not recommended for oil and solvent resistance and ozone attacks it.
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