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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 1,800 cps | 150 cps |
| Pot Life | 30 minutes | 7 minutes |
| Cure Time | 16 hours | 60 minutes |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 30 | — |
| Color | Clear Amber | White |
| Tensile Strength | 400 psi | 6,650 psi |
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™-121 30/WET | TASK™ 2 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 1,800 cps | 150 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 115A:100B |
| Pot Life | 30 minutes | 7 minutes |
| Cure Time | 16 hours | 60 minutes |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 30 | — |
| Specific Gravity | 1.04 g/cc | 1.12 g/cc |
| Specific Volume | 26.7 cu. in./lb. | 24.7 cu. in./lb. |
| Color | Clear Amber | White |
| Die C Tear Strength | 75 pli | — |
| Tensile Strength | 400 psi | 6,650 psi |
| Tensile Modulus | — | 290,000 psi |
| Elongation @ Break | 1,000 % | 6 % |
| 100% Modulus | 82 psi | — |
| Compressive Strength | — | 8,300 psi |
| Compressive Modulus | — | 78,000 psi |
| Flexural Strength | — | 9,500 psi |
| Flexural Modulus | — | 288,000 psi |
| Shrinkage | < .001 in. / in. | 0.005 in. / in. |
| Heat Deflection Temp | — | 134 °F |
Product Description
PMC™-121 30/WET
The PMC™-121 Series urethane rubbers feature convenient one-to-one by volume mix ratios. PMC™-121/30 Wet is exceptionally strong and abrasion resistant for soft urethane mold rubbers. It exudes oil that aids in demolding hard plasters and concrete.
TASK™ 2
TASK™ 2 low viscosity, high performance casting resins offer superior physical and performance properties compared to our popular Smooth-Cast™ Series of general purpose casting resins. Vacuum degassing is not necessary and it offers the convenience of a 1A:1B by volume (115A:100B by weight) mix ratio.
TASK™ 2 is white. It has high tensile and flexural strength, as well as high flexural modulus. This plastic was formulated for a variety of industrial applications including pattern making and making prototype models. This resin is designed for casting in thicknesses up to ½” (1.27 cm). TASK™ Plastics are moderately priced and are available in trial kits, one-gallon, five-gallon, 55-gallon drum and totes.