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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | 4,250 cps |
| Pot Life | 30 minutes | 15 minutes |
| Cure Time | 16 hours | 75 minutes |
| Shore A Hardness | 40 | 25 |
| Specific Volume | 27.2 cu. in./lb. | 20.6 cu. in./lb. |
| Color | Off White | Light Blue |
| Tensile Strength | 490 psi | 240 psi |
| Elongation @ Break | 1,000 % | 250 % |
| 100% Modulus | 73 psi | 100 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 | OOMOO™ 25 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | 4,250 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 100A:130B |
| Pot Life | 30 minutes | 15 minutes |
| Cure Time | 16 hours | 75 minutes |
| Shore A Hardness | 40 | 25 |
| Specific Gravity | 1.02 g/cc | 1.34 g/cc |
| Specific Volume | 27.2 cu. in./lb. | 20.6 cu. in./lb. |
| Color | Off White | Light Blue |
| Die B Tear Strength | — | 40 pli |
| Die C Tear Strength | 85 pli | — |
| Tensile Strength | 490 psi | 240 psi |
| Elongation @ Break | 1,000 % | 250 % |
| 100% Modulus | 73 psi | 100 psi |
| Shrinkage | <.001 in. / in. | 0.0025 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 400 °F |
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.
OOMOO™ 25
No Vacuuming – No Scale – Easy To Use . . . OOMOO™ 25 is an easy to use tin cure silicone rubber compound that features a convenient one-to-one by volume mix ratio (no scale necessary). It has a low viscosity for easy mixing and pouring . . . vacuum degassing is not necessary. This product cures at room temperature with negligible shrinkage. OOMOO™ 25 has a 15-minute pot life and 75-minute cure time.
For The Novice Mold Maker - OOMOO™ silicones do not have great tear strength. They are good for making simple one or two-piece block molds. If you require a high tear strength silicone, Mold Max™ silicones are recommended.
OOMOO™ 25 is suitable for a variety of art-related and industrial applications including making one and two-piece block molds for sculpture and prototype reproduction, casting plaster, resins and wax. OOMOO™ silicones are also suitable for electrical potting and encapsulation applications.