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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | 100 cps |
| Pot Life | 20 minutes | 2.5 minutes |
| Cure Time | 48 hours | 15 minutes |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 90 | — |
| Color | Clear Amber | Off-White |
| Tensile Strength | 2,000 psi | 5,840 psi |
| Elongation @ Break | 550 % | 4 % |
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.All Technical Data
| PMC™-790 | TASK™ 8 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | 100 cps |
| Mix Ratio By Volume | 2A:1B | 1A:1B |
| Mix Ratio By Weight | 2A:1B | 120A:100B |
| Pot Life | 20 minutes | 2.5 minutes |
| Cure Time | 48 hours | 15 minutes |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 90 | — |
| Specific Gravity | 1.07 g/cc | 1.09 g/cc |
| Specific Volume | 25.9 cu. in./lb. | 25.4 cu. in./lb. |
| Color | Clear Amber | Off-White |
| Die C Tear Strength | 300 pli | — |
| Tensile Strength | 2,000 psi | 5,840 psi |
| Tensile Modulus | — | 246,000 psi |
| Elongation @ Break | 550 % | 4 % |
| 100% Modulus | 640 psi | — |
| Compressive Strength | — | 8,760 psi |
| Compressive Modulus | — | 77,400 psi |
| Flexural Strength | — | 8,280 psi |
| Flexural Modulus | — | 271,000 psi |
| Shrinkage | <.001 in. / in. | 0.01 in. / in. |
| Heat Deflection Temp | — | 194 °F |
| Heat Deflection With Post Cure | — | 263 °F |
Product Description
PMC™-790
PMC™-790 is a Shore 90A industrial urethane rubber compound designed to meet the most stringent requirements of industrial production applications. It is a very hard rubber that offers superior tear and tensile strength as well as impact and abrasion resistance.
TASK™ 8
TASK™ 8 is a heat resistant polyurethane resin system made specifically for prototyping / casting applications which require thermal resistance of up to 263°F /129°C.