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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 12,500 cps | 2,000 cps |
| Pot Life | 6 minutes | 25 minutes |
| Cure Time | 30 minutes | 48 hours |
| Shore A Hardness | 16 | 80 |
| Color | Blue-Green | Light Amber |
| Tensile Strength | 400 psi | 900 psi |
| Elongation @ Break | 440 % | 750 % |
| 100% Modulus | 55 psi | 400 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
| Mold Star™ 16 FAST | PMC™-780 DRY | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 12,500 cps | 2,000 cps |
| Mix Ratio By Volume | 1A:1B | 2A:1B |
| Mix Ratio By Weight | 1A:1B | 2A:1B |
| Pot Life | 6 minutes | 25 minutes |
| Cure Time | 30 minutes | 48 hours |
| Shore A Hardness | 16 | 80 |
| Specific Gravity | 1.18 g/cc | 1.02 g/cc |
| Specific Volume | 23.5 cu. in./lb. | 27.2 cu. in./lb. |
| Color | Blue-Green | Light Amber |
| Die B Tear Strength | 88 pli | — |
| Die C Tear Strength | — | 200 pli |
| Tensile Strength | 400 psi | 900 psi |
| Elongation @ Break | 440 % | 750 % |
| 100% Modulus | 55 psi | 400 psi |
| Shrinkage | <.001 in. / in. | <.001 in. / in. |
| Useful Temperature (min) | -65 °F | — |
| Useful Temperature (max) | 450 °F | — |
Product Description
Mold Star™ 16 FAST
Mold Star™ rubbers are easy to use platinum silicones which are mixed 1A:1B by volume (no weighing scale necessary). Mold Star™ silicones feature relatively low viscosities and vacuum degassing is not required for most applications. Mold Star™ 16 FAST is a fast material with a 6 minute pot life and 30 minute cure time.
PMC™-780 DRY
PMC™-780 is a premium performance urethane rubber that offers exceptional strength, durability and abrasion resistance. PMC™-780 DOES NOT CONTAIN MOCA – a known cancer causing agent and hazard. Mixed two parts A to one part B by weight or volume, PMC™-780 urethane pours easily and cures at room temperature with negligible shrinkage to a solid Shore 80A rubber.
Pick The One Best Suited For Your Application: Original PMC™-780 Dry does not exude oil. New PMC™-780 Wet contains a built in release agent to aid in demolding concrete. (Note: “wet” rubber has a higher net shrinkage value over time vs. “dry “ rubber.)