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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 12,500 cps | 1,500 cps |
| Pot Life | 6 minutes | 30 minutes |
| Cure Time | 30 minutes | 16 hours |
| Shore A Hardness | 16 | 40 |
| Color | Blue-Green | Off White |
| Elongation @ Break | 440 % | 1,000 % |
| 100% Modulus | 55 psi | 73 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
| Mold Star™ 16 FAST | ReoFlex™ 40 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 12,500 cps | 1,500 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 1A:1B |
| Pot Life | 6 minutes | 30 minutes |
| Cure Time | 30 minutes | 16 hours |
| Shore A Hardness | 16 | 40 |
| Specific Gravity | 1.18 g/cc | 1.02 g/cc |
| Specific Volume | 23.5 cu. in./lb. | 27.2 cu. in./lb. |
| Color | Blue-Green | Off White |
| Die B Tear Strength | 88 pli | — |
| Die C Tear Strength | — | 85 pli |
| Tensile Strength | 400 psi | 490 psi |
| Elongation @ Break | 440 % | 1,000 % |
| 100% Modulus | 55 psi | 73 psi |
| Shrinkage | <.001 in. / in. | <.001 in. / in. |
| Useful Temperature (min) | -65 °F | — |
| Useful Temperature (max) | 450 °F | — |
Product Description
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.
ReoFlex™ 40
ReoFlex™ urethane rubbers offer superior physical and performance properties for production casting of wax, plasters, and resins. ReoFlex™ urethanes are available in 20A, 30A, 40A, 50A and 60A Shore hardnesses and feature convenient one-to-one by volume mix ratios. Vacuum degassing is not necessary and ReoFlex™ rubbers cure with negligible shrinkage to a durable rubber that will last in production. ReoFlex™ “Wet” rubbers will shrink somewhat over time vs. “Dry” formulations.
ReoFlex™ mold rubbers are used for a variety of applications including making molds to reproduce sculpture and architectural elements, as well as for making special effects, toys and prototypes. Vibrant colors can be achieved by adding So-Strong™ Color Tints, available from Smooth-On.
Casting Concrete? Look into the VytaFlex™ series of urethane mold rubbers. VytaFlex™ urethanes were formulated specifically for casting concrete / pigmented concrete and feature Smooth-On’s exclusive ‘V-Polymer™’ technology.
FOR COMMERCIAL/INDUSTRIAL USE ONLY