Polyurethane - Polyurethane Rubber (AU, EU) |
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Typical Trade Names:
- Adiprene - E.I. du Pont de Nemours Company
- Cyanaprene - American Cyanamid Co.
- Disogrin - Disogrin Co.
- Elastothane - Thiokol Chemical Corp.
- Formrez - Silco Chemical Co.
- Pellethane - Upjohn Co.
- Vibrathane - Uniroyal
Polyurethanes exhibit outstanding mechanical and physical properties in comparison with other elastomers. Over a temperature range of -65 degrees to 200 degrees F, resistance to petroleum oils, hydrocarbon fuels, oxygen, ozone and weathering is good. However, polyurethanes quickly deteriorate when exposed to acids, ketones and chlorinated hydrocarbons. Certain types of polyurethane are also sensitive to water and humidity.
The inherent toughness and abrasion resistance of polyurethane seals is particularly desirable in hydraulic systems where high pressures, shock loads, wide metal tolerances, or abrasive contamination is anticipated.
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