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Comparative Properties of Natural & Various Synthetic Rubbers
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- 2010.10.26
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◎Comparative Properties of Natural & Various Synthetic Rubbers
PROPERTIES |
NATURAL |
Nitrile |
ADIPRENE |
HYPALON |
NORDEL |
NEOPRENE |
Silicone |
VITON |
HARDNESS
RANGE |
30 - 90 A |
30 - 90 A |
60.99 + A |
40 - 95 A |
40 - 90 A |
40 - 95 A |
30 - 85 A |
60 - 95 A |
TENSILE
STRENGTH |
Over 3000 |
Over 2000 psi |
Over 4000 |
Over 2500 |
--- |
Over 3000 |
Over 500 psi |
Over 2000 |
Black loaded stocks |
Over 3000 |
Over 3000 psi |
--- |
Over 3000 |
Over 3000 |
Over 3000 |
Over 1400 psi |
Over 2000 |
SPECIFIC GRAVITY |
0.93 |
0.98 |
1.06 |
1.12 - 1.28 |
0.86 |
1.23 |
- |
1.85 |
VULCANIZING PROPERTIES |
Excellent |
Excellent |
Excellent |
Excellent |
Excellent |
Excellent |
Excellent |
Good |
ADHESION TO METALS |
Excellent |
Excellent |
Excellent |
Excellent |
Good to Excellent |
Excellent |
Poor |
Good to Excellent |
ADHESION TO FABRICS |
Excellent |
Excellent |
Excellent |
Good |
Good |
Excellent |
Poor |
Good toExcellent |
TEAR RESISTANCE |
Good |
Excellent |
Excellent |
Fair |
Good |
Good |
Poor |
Fair |
ABRASION RESISTANCE |
Excellent |
Excellent |
Outstanding |
Excellent |
Excellent |
Excellent |
Poor |
Good |
COMPRESSION SET |
Good |
Good |
Fair |
Fair |
Good |
Fair to Good |
Good |
Fair to Good |
REBOUND |
Excellent |
Good |
Poor to V.L.Temp |
Good |
Very Good |
Very Good |
Fair to Good |
Good |
- Hot |
Excellent |
Good |
Good at R.T. |
Good |
Very Good |
Very Good |
Fair to Good |
Excellent |
DIELECTRIC STRENGTH |
Excellent |
Fair to Good |
Excellent |
Excellent |
Excellent |
Good |
Excellent |
Good |
ELECTRICAL INSULATION |
Good to Excellent |
Fair to Good |
Fair to Good |
Good |
Excellent |
Fair to Good |
Excellent |
Fair to Good |
PERMEABILITY TO GASES |
Fair |
Excellent |
Fair |
Low to V.L. |
Fair |
Low |
Poor |
Very low |
ACID RESISTANCE- Dilute |
Fair to Good |
Good |
Fair |
Excellent |
Excellent |
Excellent |
Good |
Excellent |
Concentrated |
Fair to Good |
Fair to Good |
Poor |
Very Good |
Excellent |
Good |
Good |
Excellent |
SOLVENT RESISTANCE |
Poor |
Good |
Excellent |
Good |
Poor |
Good |
Good |
Excellent |
Aromatic hydrocarbons |
Poor |
Excellent |
Fair to Good |
Fair |
Poor |
Fair |
Good |
Excellent |
-Oxygenated (Ketones, etc.) |
Fair to Good |
Poor |
Poor |
Poor |
Good |
Poor |
Good |
Poor |
- Lacquer solvents |
Poor |
Good |
Poor |
Poor |
Poor |
Poor |
Good |
Poor |
RESISTANCE TO : |
Poor |
Good |
Excellent |
Good to Excellent |
Poor |
Good |
Good |
Excellent |
Oil and gasoline |
Poor |
Very Good |
Excellent |
Good |
Poor |
Good |
Good |
Excellent |
Animal and Vegetable oils |
Poor to Good |
Poor |
Excellent |
Good |
Good |
Good |
Good |
Excellent |
Water absorption |
Very Good |
Good |
Good at R.T. Poor at 212oF. |
Very Good |
Very Good |
Good |
Excellent |
Very Good |
Oxidation |
Good |
Good |
Excellent |
Excellent |
Excellent |
Excellent |
Excellent |
Outstanding |
Ozone |
Fair |
Good |
Excellent |
Outstanding |
Outstanding |
Excellent |
Outstanding |
Outstanding |
Sunlight aging |
Poor |
Good |
Good |
Outstanding |
Outstanding |
Very Good |
Outstanding |
Very Good |
Heat aging |
Good |
Good |
Good |
Excellent |
Excellent |
Excellent |
Outstanding |
Outstanding |
Flame ** |
Poor |
Poor to Good |
Fair (Will melt) |
Good |
Poor |
Very Good |
Poor |
Excellent |
Heat |
Good |
Good |
Good |
Excellent |
Excellent |
Very Good |
Excellent |
Outstanding |
Cold |
Excellent |
Fair to Good |
Excellent |
Good |
Excellent |
Good |
Excellent |
Good |
** These evaluation are qualitative and comparitive only. They should not be construed asrecommendations. Specific compounding is required to optimize performance. ndividual case and, if applicable, results of appropriate flame tests. |
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