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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 2,000 cps | 11,000 cps |
| Pot Life | 25 minutes | 5 minutes |
| Cure Time | 48 hours | 45 minutes |
| Shore A Hardness | 80 | 22 |
| Color | Light Amber | Translucent Green |
| Tensile Strength | 900 psi | 490 psi |
| Elongation @ Break | 750 % | 450 % |
| 100% Modulus | 400 psi | 49 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™-780 WET | EZ-Spray™ Silicone 22 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 2,000 cps | 11,000 cps |
| Mix Ratio By Volume | 2A:1B | 1A:1B |
| Mix Ratio By Weight | 2A:1B | — |
| Pot Life | 25 minutes | 5 minutes |
| Cure Time | 48 hours | 45 minutes |
| Shore A Hardness | 80 | 22 |
| Specific Gravity | 1.02 g/cc | 1.08 g/cc |
| Specific Volume | 27.2 cu. in./lb. | 25.6 cu. in./lb. |
| Color | Light Amber | Translucent Green |
| Die B Tear Strength | — | 102 pli |
| Die C Tear Strength | 200 pli | — |
| Tensile Strength | 900 psi | 490 psi |
| Elongation @ Break | 750 % | 450 % |
| 100% Modulus | 400 psi | 49 psi |
| Shrinkage | <.001 in. / in. | <.001 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 500 °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.
EZ-Spray™ Silicone 22
EZ~Spray™ Silicone 22 is a sprayable silicone which cure quickly to soft rubbers with high elongation and tear strength. After a suitable thickness is attained, EZ~Spray™ Silicone 22 cures in about 45 minutes. EZ~Spray™ Silicone cures with negligible shrinkage to strong, durable silicone rubbers good for production casting of polyester, epoxy or urethane resins, gypsum, concrete and other materials.