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Key Differences
| Mixed Viscosity | Sprayable | 12,500 cps |
| Pot Life | 1.5 minutes | 45 minutes |
| Cure Time | 1 hour | 6 hours |
| Color | Purple | Blue |
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
| EZ-Spray™ 35 | Mold Star™ 30 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Sprayable | 12,500 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | — | 100A:96B |
| Pot Life | 1.5 minutes | 45 minutes |
| Cure Time | 1 hour | 6 hours |
| Shore A Hardness | 35 | 30 |
| Specific Gravity | 1.15 g/cc | 1.12 g/cc |
| Specific Volume | 24.1 cu. in./lb. | 24.7 cu. in./lb. |
| Color | Purple | Blue |
| Die B Tear Strength | 92 pli | 88 pli |
| Tensile Strength | 490 psi | 420 psi |
| Elongation @ Break | 415 % | 339 % |
| 100% Modulus | — | 96 psi |
| Shrinkage | <.001 in. / in. | <.001 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 450 °F |
Product Description
EZ-Spray™ 35
EZ~Spray™ 35 is a platinum cure silicone rubber developed specifically for spraying through the EZ~Spray™ Junior Cartridge System. With no or minimal surface preparation, EZ~Spray™ 35 can be sprayed onto vertical surfaces for making fast rubber molds of large surface areas. After a suitable thickness is attained, EZ~Spray™ 35 cures in 1 hour with negligible shrinkage to a durable mold rubber good for production casting resins, foams, concrete, plaster and other materials. Application of a support shell is achieved by spraying Smooth-On’s EZ~Spray™ Plastic over the rubber mold after it has fully cured. Read the EZ~Spray™ Junior manual prior to spraying.
Mold Star™ 30
Mold Star™ mold 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™ 30 is a harder material, with a 30A Shore hardness.