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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 2,000 cps | 40,000 cps |
| Pot Life | 60 minutes | 45 minutes |
| Cure Time | 16 hours | 6 hours |
| Shore A Hardness | 60 | 33 |
| Specific Volume | 26.6 cu. in./lb. | 19.5 cu. in./lb. |
| Color | Off-White | White |
| Tensile Strength | 880 psi | 222 psi |
| 100% Modulus | 300 psi | 71 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
| VytaFlex™ 60 | Smooth‑Sil™ 933 Flame Out | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 2,000 cps | 40,000 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 1A:1B |
| Pot Life | 60 minutes | 45 minutes |
| Cure Time | 16 hours | 6 hours |
| Shore A Hardness | 60 | 33 |
| Specific Gravity | 1.04 g/cc | 1.42 g/cc |
| Specific Volume | 26.6 cu. in./lb. | 19.5 cu. in./lb. |
| Color | Off-White | White |
| Die B Tear Strength | — | 50 pli |
| Die C Tear Strength | 136 pli | — |
| Tensile Strength | 880 psi | 222 psi |
| Elongation @ Break | 480 % | 433 % |
| 100% Modulus | 300 psi | 71 psi |
| Shrinkage | <0.001 in. / in. | <0.001 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 450 °F |
Product Description
VytaFlex™ 60
Using Smooth-On’s exclusive “V-Polymer™” technology, VytaFlex™ urethane rubbers offer superior physical and performance properties for casting concrete. VytaFlex™ urethanes are available in 10A, 20A, 30A, 40A, 45A, 50A and 60A Shore hardness’s and feature convenient one-to-one by volume mix ratios.
Vacuum degassing is not necessary and VytaFlex™ rubbers cure with negligible shrinkage to a durable rubber that will last in production.
VytaFlex™ mold rubbers work especially well for casting pigmented / colored concrete. Molds made with VytaFlex™ Series urethanes will render accurate and uniform colored castings.
FOR COMMERCIAL/INDUSTRIAL USE ONLY
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Smooth‑Sil™ 933 Flame Out
Smooth-Sil™ 933 Flame Out is designed specifically for flame rated gasket and potting applications.
Smooth-Sil™ 933 Flame Out is a Shore 33A platinum silicone that is mixed 1A:1B by volume or weight. Rubber cures at room temperature (73°F/23°C) with negligible shrinkage. Vacuum degassing is recommended to minimize air bubbles in cured rubber. Cured material is rated to UL 94 V-0
Smooth-Sil™ 933 cures in 6 hours to a soft, strong rubber that is tear resistant and exhibits very low long term shrinkage. An infinite number of color effects can be achieved by adding Silc Pig™ silicone pigments. Applications include electrical potting for flame resistant enclosures, creating gaskets for medical devices and electrical appliances and other applications where a flame resistant, flexible silicone seal is required. Note: This product will not cure against surfaces containing sulfur, even when sealed.