AU – Polyester Urethane or Polyether Urethane
- Abbreviation: AU or EU
- ASTM D-2000 Classification: BG
- Chemical Definition: Polyester / Polyether Urethane
Physical & Mechanical Properties
- Durometer or Hardness Range: 35 – 95 Shore A
- Tensile Strength Range: 500 – 6,000 PSI
- Elongation (Range %): 250% – 900%
- A/liasion Resistance: Excellent
- Adhesion to Metal: Excellent
- Adhesion to Rigid Materials: Good
- Compression Set: Poor to Good
- Flex Cracking Resistance: Fair to Good
- Impact Resistance: Good to Excellent
- Resilience / Rebound: Poor to Good
- Tear Resistance: Good to Excellent
- Vi/liation Dampening: Fair to Good
Chemical Resistance
- Acids, Dilute: Fair to Good
- Acids, Concentrated: Poor
- Acids, Organic (Dilute): Fair
- Acids, Organic (Concentrated): Poor
- Acids, Inorganic: Poor to Fair
- Alcohol’s: Good
- Aldehydes: Poor
- Alkalies, Dilute: Fair to Good
- Alkalies, Concentrated: Poor to Good
- Amines: Poor to Good
- Animal & Vegetable Oils: Fair to Excellent
- Brake Fluids, Non-Petroleum Based: Poor
- Diester Oils: Poor to Good
- Esters, Alkyl Phosphate: Poor
- Esters, Aryl Phosphate: Poor
- Ethers: Fair
- Fuel, Aliphatic Hydrocarbon: Good to Excellent
- Fuel, Aromatic Hydrocarbon: Poor to Fair
- Fuel, Extended (Oxygenated): Fair to Good
- Halogenated Solvents: Poor to Good
- Hydrocarbon, Halogenated: Fair to Good
- Ketones: Poor
- Lacquer Solvents: Poor
- LP Gases & Fuel Oils: Fair to Good
- Mineral Oils: Good to Excellent
- Oil Resistance: Good
- Petroleum Aromatic: Good
- Petroleum Non-Aromatic: Good
- Refrigerant Ammonia: Poor
- Refrigerant Halofluorocarbons: R-12
- Refrigerant Halofluorocarbons w/ Oil: R-12
- Silicone Oil: Excellent
- Solvent Resistance: Poor
Thermal Properties
- Low Temperature Range: -65º F to -40º F
- Minimum for Continuous Use (Static): -65º F
- Brittle Point: -60º F to -80º F
- High Temperature Range: +180º F to +220º F
- Maximum for Continuous Use (Static): +200º F
Environmental Performance
- Colorability: Good to Excellent
- Flame Resistance: Poor to Good
- Gas Permeability: Good to Excellent
- Odor: Excellent
- Ozone Resistance: Excellent
- Oxidation Resistance: Good to Excellent
- Radiation Resistance: Good to Excellent
- Steam Resistance: Poor
- Sunlight Resistance: Good to Excellent
- Taste Retention: Fair to Good
- Weather Resistance: Excellent
- Water Resistance: Poor to Good
For assistance in identifying the appropriate polymer or material, or to develop and formulate a urethane rubber compound to meet your specific application and performance requirements, please contact Rahco Rubber, Inc. at sales@rahco-rubber.com or 847-298-4200.
Rahco Rubber, Inc. makes no expressed or implied warranty as to any qualities, attributes, or characteristics of any polymer or material. This information is provided for reference only.