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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 35,000 cps | 1,500 cps |
| Cure Time | 4 hours | 16 hours |
| Color | Water Clear Translucent | Off White |
| Elongation @ Break | 400 % | 1,000 % |
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
| SORTA-Clear™ 37 | ReoFlex™ 40 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 35,000 cps | 1,500 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 1A:1B |
| Pot Life | 25 minutes | 30 minutes |
| Cure Time | 4 hours | 16 hours |
| Shore A Hardness | 37 | 40 |
| Specific Gravity | 1.08 g/cc | 1.02 g/cc |
| Specific Volume | 25.6 cu. in./lb. | 27.2 cu. in./lb. |
| Color | Water Clear Translucent | Off White |
| Die B Tear Strength | 105 pli | — |
| Die C Tear Strength | — | 85 pli |
| Tensile Strength | 600 psi | 490 psi |
| Elongation @ Break | 400 % | 1,000 % |
| 100% Modulus | 90 psi | 73 psi |
| Shrinkage | <.001 in. / in. | <.001 in. / in. |
Product Description
SORTA-Clear™ 37
SORTA-Clear™ Series rubbers are premium water clear translucent silicone rubbers (platinum catalyst) which cure at room temperature with negligible shrinkage. SORTA-Clear™ 37 has Shore 37A hardness and features high tensile and tear strength. This product also offers the convenience of a 1A:1B by volume mix ratio.
SORTA-Clear™ silicones are ideal for making prototype, jewelry or other molds of any configuration where model visibility is important (i.e. extracting a model from the mold via cutting). Materials such as urethane, epoxy or polyester resins can then be cast into SORTA-Clear™ silicone without application of a release agent. Other materials such as wax and low melt metal alloys can also be cast into SORTA-Clear™. SORTA-Clear™ can be pigmented with SILC Pig™ silicone pigments.
SORTA Clear™ 37 silicone rubber is FOOD SAFE and can be used for culinary applications including casting chocolate and other confections.
Certified Skin Safe - Cured SORTA Clear™ 37 is skin safe and certified by an independent laboratory.
› Click here for more SORTA-Clear™ silicone products.
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