C
mpare
T
l
Key Differences
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | Variable |
| Pot Life | 20 minutes | 2 seconds |
| Cure Time | 48 hours | 60 minutes |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 90 | — |
| Color | Clear Amber | Off White |
| Elongation @ Break | 550 % | 20 % |
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 | EZ-Spray™ StyroCoat™ | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | Variable |
| Mix Ratio By Volume | 2A:1B | 1A:1B |
| Mix Ratio By Weight | 2A:1B | — |
| Pot Life | 20 minutes | 2 seconds |
| Cure Time | 48 hours | 60 minutes |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 90 | — |
| Specific Gravity | 1.07 g/cc | 1.12 g/cc |
| Specific Volume | 25.9 cu. in./lb. | 24.7 cu. in./lb. |
| Color | Clear Amber | Off White |
| Die C Tear Strength | 300 pli | — |
| Tensile Strength | 2,000 psi | — |
| Tensile Modulus | — | 131,000 psi |
| Ultimate Tensile | — | 3,170 psi |
| Elongation @ Break | 550 % | 20 % |
| 100% Modulus | 640 psi | — |
| Compressive Strength | — | 5,000 psi |
| Compressive Modulus | — | 47,600 psi |
| Flexural Strength | — | 6,400 psi |
| Flexural Modulus | — | 205,000 psi |
| Shrinkage | <.001 in. / in. | 0.015 in. / in. |
| Heat Deflection Temp | — | 130 °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.
EZ-Spray™ StyroCoat™
StyroCoat™ Plastic is a flame rated (E-84) sprayable polyurethane plastic formulated to economically coat a variety of surfaces. Dispensed through Smooth-On’s EZ~Spray™, Jr. cartridge system, the plastic cures in about 2 seconds and can be applied to vertical surfaces without running off. An advantage of the system is that large areas can be covered in a short period of time. Cured plastic is lightweight, flame, impact, and water resistant. It can be sanded for priming and painting. Plastic can also be sprayed into a rubber mold to make fast, impact resistant castings (application of a release agent may be necessary before spraying into the mold). StyroCoat™ Plastic is used for theme design / fabrication applications, making movie set environments, making surfaces water resistant and other industrial applications.