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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | 3,000 cps |
| Pot Life | 30 minutes | 8 minutes |
| Cure Time | 16 hours | 5 hours |
| Shore D Hardness | — | 85 |
| Shore A Hardness | 40 | — |
| Specific Volume | 27.2 cu. in./lb. | 17.3 cu. in./lb. |
| Color | Off White | Beige |
| Tensile Strength | 490 psi | 3,100 psi |
| Elongation @ Break | 1,000 % | 0.4 % |
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 | Shell Shock™ SLOW | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | 3,000 cps |
| Mix Ratio By Volume | 1A:1B | 1A:4B |
| Mix Ratio By Weight | 1A:1B | 1A:5B |
| Pot Life | 30 minutes | 8 minutes |
| Cure Time | 16 hours | 5 hours |
| Shore D Hardness | — | 85 |
| Shore A Hardness | 40 | — |
| Specific Gravity | 1.02 g/cc | 1.60 g/cc |
| Specific Volume | 27.2 cu. in./lb. | 17.3 cu. in./lb. |
| Color | Off White | Beige |
| Die C Tear Strength | 85 pli | — |
| Tensile Strength | 490 psi | 3,100 psi |
| Tensile Modulus | — | 435,000 psi |
| Elongation @ Break | 1,000 % | 0.4 % |
| 100% Modulus | 73 psi | — |
| Compressive Strength | — | 9,000 psi |
| Compressive Modulus | — | 500,000 psi |
| Flexural Strength | — | 7,150 psi |
| Flexural Modulus | — | 980,000 psi |
| Shrinkage | <.001 in. / in. | 0.0006 in. / in. |
| Heat Deflection Temp | — | 135 °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.
Shell Shock™ SLOW
Shell Shock™ SLOW is a thixotropic plastic that self thickens when mixed and can be brushed onto a variety of surfaces or into rubber molds. When Parts A and B are mixed in proper proportion (1A:4B by volume or 1A:5B by weight), material cures at room temperature with virtually no shrinkage to a hard, durable plastic that exhibits good compressive and flexural strength. Fully cured castings are rigid and can be sanded, primed and painted. Color effects are possible by adding SO-Strong™ Color Tints.
Shell Shock™ plastics are ideal for making fast, lightweight rigid molds for creating silicone appliances and effects (use as a replacement for ‘stone molds’). You can also brush a “gel coat” into a rubber mold and back it up with rigid foam, creating a highly detailed lightweight casting. These products can also be brushed onto styrofoam (polystyrol) as an impact resistant coating that can be sanded, primed and painted (minimum 3 coats recommended). Shell Shock™ plastics can also be used to make rigid support shells for brush on rubber molds.