| Hardness to match a broad range of requirements
- and highly elastic over the entire range |
Shore Hardness |
50A to 80D |
| Abrasion resistance to withstand wear and
provide long service life |
Taber Abrasion, mg loss (ASTM D-4060) NBS
Abrasion, % rubber std. |
as low as 3.5 mg/1,000 cycles as high as
1,020% |
| Tensile strength to perform under high mechanical
stresses |
Tensile strength (ASTM D-412)
Ultimate Elongation (ASTM D-412) |
< 100 psi - > 8,000 psi
2% - 750% |
| Dynamic load-bearing ability |
|
Up to 70-90% higher than rubber wheels of
comparable hardness |
| Superior tear resistance |
Split tear strength (ASTM D-1938) |
Up to 350 lbf/in |
|
Die C tear strength (ASTM D-624) |
Up to 805 lbf/in |
| Corrosion resistance |
|
Withstands attacks by many oils, greases,
chemicals and solvents |
| Weathering and aging resistance |
|
- Withstands harsh environmental conditions (e.g., ozone,
UV and high-energy radiation)
- Specific grades also resist bacterial attack
- Can achieve over 80% tensile strength retention in humid
aging (70°C, 100% RH, 2 wks) and over 50% tensile strength
retention in steam aging tests (121°C, 15 psi steam,
24 hrs)
|
| From excellent shock absorption to outstanding
resilience |
Rebound, % (ASTM D-2632) |
- < 10% - 70%
- Provides extensive vibration damping and sound attenuation
capabilities
|
| Lighter weight than traditional materials
|
Specific gravity, g/cc |
Typically 1.1-1.26 |
| Coefficient of friction |
|
Decreases as the hardness of the polyurethane
material increases < 0.2 to > 0.9 against steel |
| Flexible over a wide temperature range |
|
Some materials can remain flexible below
-60°C |
