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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | 45,000 cps |
| Mix Ratio By Volume | 1A:1B | N/A (gram scale required) |
| Pot Life | 30 minutes | 45 minutes |
| Cure Time | 16 hours | 24 hours |
| Color | Off White | Mint Green |
| Elongation @ Break | 1,000 % | 250 % |
| 100% Modulus | 73 psi | 190 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
| ReoFlex™ 40 | Mold Max™ 40 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | 45,000 cps |
| Mix Ratio By Volume | 1A:1B | — |
| Mix Ratio By Weight | 1A:1B | 100A:10B |
| Pot Life | 30 minutes | 45 minutes |
| Cure Time | 16 hours | 24 hours |
| Shore A Hardness | 40 | 40 |
| Specific Gravity | 1.02 g/cc | 1.14 g/cc |
| Specific Volume | 27.2 cu. in./lb. | 24.3 cu. in./lb. |
| Color | Off White | Mint Green |
| Die B Tear Strength | — | 120 pli |
| Die C Tear Strength | 85 pli | — |
| Tensile Strength | 490 psi | 550 psi |
| Elongation @ Break | 1,000 % | 250 % |
| 100% Modulus | 73 psi | 190 psi |
| Shrinkage | <.001 in. / in. | 0.004 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 400 °F |
| Dielectric Constant, 100Hz | — | 3.29 |
| Dielectric Strength | — | 330 volts/mil |
| Dissipation Factor, 100Hz | — | 0.005 |
| Volume Resistance | — | 8.29E+11 ohm |
| Volume Resistivity | — | 5.83E+13 ohm/cm |
Product Description
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
› Click here for more ReoFlex™ rubber products.
Mold Max™ 40
Mold Max™ Silicones are tin-cured silicone mold rubber compounds that have exceptional working properties and library life. Mold Max™ Silicones feature Smooth-On’s exclusive “Libra™” catalyst for long library life. Mold Max™ silicones can be pigmented with Silc Pig™ silicone colorants. Pot life for the pourable silicones is 45 minutes and they cure overnight at room temperature.
Vacuum degassing mixed material using a vacuum pump and chamber to remove entrapped air is recommended.