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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Brushable | 12,500 cps |
| Pot Life | 20 minutes | 6 minutes |
| Cure Time | 16 hours | 30 minutes |
| Shore A Hardness | 50 | 16 |
| Color | Off White | Blue-Green |
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
| Brush-On™ 50 | Mold Star™ 16 FAST | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Brushable | 12,500 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 100A:125B | 1A:1B |
| Pot Life | 20 minutes | 6 minutes |
| Cure Time | 16 hours | 30 minutes |
| Shore A Hardness | 50 | 16 |
| Specific Gravity | 1.17 g/cc | 1.18 g/cc |
| Specific Volume | 23.7 cu. in./lb. | 23.5 cu. in./lb. |
| Color | Off White | Blue-Green |
| Die B Tear Strength | — | 88 pli |
| Die C Tear Strength | 80 pli | — |
| Tensile Strength | 500 psi | 400 psi |
| Elongation @ Break | 400 % | 440 % |
| 100% Modulus | — | 55 psi |
| Shrinkage | <.001 in. / in. | <.001 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 450 °F |
Product Description
Brush-On™ 50
Smooth-On’s Brush-On™ Series of mold rubbers are extremely versatile and are famous for their abrasion resistance and high tear strength. They have the convenience of a one-to-one mix ratio and are easy to mix and apply with a brush or spatula.
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.