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Key Differences
| Mixed Viscosity | Brushable | 250 cps |
| Mix Ratio By Volume | 1A:1B | N/A (gram scale required) |
| Color | Off White | Clear |
| Die C Tear Strength | 80 pli | 25 pli |
| Tensile Strength | 500 psi | 250 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
| Brush-On™ 50 | Clear Flex™ 50 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Brushable | 250 cps |
| Mix Ratio By Volume | 1A:1B | — |
| Mix Ratio By Weight | 100A:125B | 1A:2B |
| Pot Life | 20 minutes | 25 minutes |
| Cure Time | 16 hours | 16 hours |
| Shore A Hardness | 50 | 50 |
| Specific Gravity | 1.17 g/cc | 1.04 g/cc |
| Specific Volume | 23.7 cu. in./lb. | 26.8 cu. in./lb. |
| Color | Off White | Clear |
| Die C Tear Strength | 80 pli | 25 pli |
| Tensile Strength | 500 psi | 250 psi |
| Elongation @ Break | 400 % | 500 % |
| Shrinkage | <.001 in. / in. | 0.0015 in. / in. |
| Index of Refraction at 20°C | — | 1.48822 |
| Index of Refraction at 25°C | — | 1.48649 |
Product Description
Brush-On™ 50
Smooth-On’s Brush-On™ Series of mold rubbers are extremely versatile and are famous for their abrasion resistance and high tear strength. They have the convenience of a one-to-one mix ratio and are easy to mix and apply with a brush or spatula.
Clear Flex™ 50
Clear Flex™ 50 is a water white clear urethane liquid rubber compounds designed for applications that require absolute clarity and resistance to sunlight. Low viscosity ensures easy mixing and pouring. Clear Flex™ 50 will cure at room temperature with negligible shrinkage.
CAUTION: NOT FOR HOME USE. THIS PRODUCT IS FOR INDUSTRIAL USE ONLY. With adequate local exhaust ventilation, respiratory protection is not normally required when using this product. Where risk assessment shows air-purifying respirators are appropriate, follow OSHA respirator regulations and European Standards EN 141, 143 and 371. Protective clothing (gloves and long sleeves) is required to minimize the risk of dermal sensitization. If breathing is affected or a dermal rash develops, immediately cease using this product and seek medical attention. Read SDS before using.