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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Brushable | 600 cps |
| Mix Ratio By Volume | 1A:1B | N/A (gram scale required) |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 40 | — |
| Color | Grey | Clear |
| Tensile Strength | 420 psi | 2,500 psi |
| Elongation @ Break | 577 % | 10 % |
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
| EZ-Mix™ 40 | Crystal Clear™ 200 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Brushable | 600 cps |
| Mix Ratio By Volume | 1A:1B | — |
| Mix Ratio By Weight | 100A:95B | 100A:90B |
| Pot Life | 18 minutes | 20 minutes |
| Thin Film Recoat Time | 60 minutes | — |
| Cure Time | 16 hours | 16 hours |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 40 | — |
| Specific Gravity | 1.025 g/cc | 1.036 g/cc |
| Specific Volume | 27 cu. in./lb. | 26.7 cu. in./lb. |
| Color | Grey | Clear |
| Die C Tear Strength | 67 pli | — |
| Tensile Strength | 420 psi | 2,500 psi |
| Tensile Modulus | — | 73,200 psi |
| Elongation @ Break | 577 % | 10 % |
| Compressive Strength | — | 6,385 psi |
| Compressive Modulus | — | 40,000 psi |
| Flexural Strength | — | 10,650 psi |
| Flexural Modulus | — | 200,000 psi |
| Shrinkage | <.001 in. / in. | 0.001 in. / in. |
| Heat Deflection Temp | — | 120 °F |
| Index of Refraction at 20°C | — | 1.49962 |
| Index of Refraction at 25°C | — | 1.49894 |
Product Description
EZ-Mix™ 40
EZ~MIX™ 40 is a brushable polyurethane rubber mold compound that mixes and applies easily. Two liquids (Part A and Part B) are measured and combined in equal amounts by volume (no scale is necessary). After a few minutes of mixing, EZ~MIX™ 40 is ready to be applied to a vertical surface with a brush. After a suitable thickness is attained (multiple layers), EZ~MIX™ 40 cures overnight with negligible shrinkage to a flexible, durable mold rubber. Following the application of a support shell, a rubber mold made with EZ~MIX™ 40 is suitable for casting a variety of materials including wax, gypsum, urethane/epoxy resins, concrete, cement, etc.
Crystal Clear™ 200
Crystal Clear™ 200 is a water white clear and made specifically for applications that require clarity. These rigid urethane casting resins differ only in working and demold times. Low viscosity ensures easy mixing and pouring. Crystal Clear™ resins 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.