C
mpare
T
l
Key Differences
| Product Type |
|
|
| Mixed Viscosity | 2,000 cps | Dough |
| Shore D Hardness | — | 73 |
| Shore A Hardness | 80 | — |
| Specific Volume | 27.2 cu. in./lb. | 34.6 cu. in./lb. |
| Color | Light Amber | Grey |
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™-780 WET | Free Form™ AIR Fire Safe | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 2,000 cps | Dough |
| Mix Ratio By Volume | 2A:1B | 1A:1B |
| Mix Ratio By Weight | 2A:1B | — |
| Pot Life | 25 minutes | — |
| Cure Time | 48 hours | — |
| Shore D Hardness | — | 73 |
| Shore A Hardness | 80 | — |
| Specific Gravity | 1.02 g/cc | 0.8 g/cc |
| Specific Volume | 27.2 cu. in./lb. | 34.6 cu. in./lb. |
| Color | Light Amber | Grey |
| Die C Tear Strength | 200 pli | — |
| Tensile Strength | 900 psi | — |
| Elongation @ Break | 750 % | — |
| 100% Modulus | 400 psi | — |
| Shrinkage | <.001 in. / in. | — |
| Heat Deflection Temp | — | 140 °F |
Product Description
PMC™-780 WET
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.
Free Form™ AIR Fire Safe
Free Form™ AIR Fire Safe is a lightweight epoxy putty that certifies to the highest flame rating available (E84, Class A). This is a low odor, low shrinkage putty that is unique, inexpensive and easy to use. Free Form™ AIR Fire Safe is mixed by hand with a 1A:1B by volume mix ratio. It offers a long working time and cures overnight at room temperature to a rigid epoxy that is very strong. It can be sanded, shaped and drilled. It will readily accept any paint. Free Form™ AIR Fire Safe can also be color pigmented with UVO™ or Ignite™ colorants.