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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 280 cps | 600 cps |
| Pot Life | 5 hours | 20 minutes |
| Cure Time | 24 hours | 16 hours |
| Tensile Strength | 6,630 psi | 2,500 psi |
| Tensile Modulus | 572,000 psi | 73,200 psi |
| Compressive Strength | 9,610 psi | 6,385 psi |
| Compressive Modulus | 91,300 psi | 40,000 psi |
| Flexural Modulus | 410,000 psi | 200,000 psi |
| Shrinkage | 0.002 in. / in. | 0.001 in. / in. |
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
| EpoxAcast™ 690 | Crystal Clear™ 200 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 280 cps | 600 cps |
| Mix Ratio By Weight | 100A:30B | 100A:90B |
| Pot Life | 5 hours | 20 minutes |
| Cure Time | 24 hours | 16 hours |
| Shore D Hardness | 80 | 80 |
| Specific Gravity | 1.10 g/cc | 1.036 g/cc |
| Specific Volume | 25 cu. in./lb. | 26.7 cu. in./lb. |
| Color | Clear | Clear |
| Tensile Strength | 6,630 psi | 2,500 psi |
| Tensile Modulus | 572,000 psi | 73,200 psi |
| Tensile Elongation | 1.8 % | — |
| Elongation @ Break | — | 10 % |
| Compressive Strength | 9,610 psi | 6,385 psi |
| Compressive Modulus | 91,300 psi | 40,000 psi |
| Flexural Strength | 10,980 psi | 10,650 psi |
| Flexural Modulus | 410,000 psi | 200,000 psi |
| Shrinkage | 0.002 in. / in. | 0.001 in. / in. |
| Heat Deflection Temp | 115 °F | 120 °F |
| Index of Refraction at 20°C | 1.565 | 1.49962 |
| Index of Refraction at 25°C | — | 1.49894 |
Product Description
EpoxAcast™ 690
EpoxAcast™ 690 is an UV resistant clear casting epoxy resins suitable for a variety of industrial and art related projects requiring a rigid, clear finished casting. EpoxAcast™ 690 features a very low viscosity for easy mixing and minimal bubble entrapment. Castings cure with negligible shrinkage and are very hard and strong. Resin can be colored with UVO™ or IGNITE™ colorants. Cast Magic™ and Glow Worm™ powders can also be added to create amazing casting effects.
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.