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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 280 cps | Putty |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Pot Life | 5 hours | 4 minutes |
| Cure Time | 24 hours | 30 minutes |
| Shore D Hardness | 80 | — |
| Shore A Hardness | — | 38 |
| Color | Clear | Light Purple |
| Tensile Strength | 6,630 psi | 520 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 | Equinox™ 38 MEDIUM | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 280 cps | Putty |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 100A:30B | 1A:1B |
| Pot Life | 5 hours | 4 minutes |
| Cure Time | 24 hours | 30 minutes |
| Shore D Hardness | 80 | — |
| Shore A Hardness | — | 38 |
| Specific Gravity | 1.10 g/cc | 1.25 g/cc |
| Specific Volume | 25 cu. in./lb. | 22.2 cu. in./lb. |
| Color | Clear | Light Purple |
| Die B Tear Strength | — | 140 pli |
| Tensile Strength | 6,630 psi | 520 psi |
| Tensile Modulus | 572,000 psi | — |
| Tensile Elongation | 1.8 % | — |
| Elongation @ Break | — | 430 % |
| 100% Modulus | — | 119 psi |
| Compressive Strength | 9,610 psi | — |
| Compressive Modulus | 91,300 psi | — |
| Flexural Strength | 10,980 psi | — |
| Flexural Modulus | 410,000 psi | — |
| Shrinkage | 0.002 in. / in. | 0.001 in. / in. |
| Heat Deflection Temp | 115 °F | — |
| Index of Refraction at 20°C | 1.565 | — |
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.
Equinox™ 38 MEDIUM
Equinox™ Silicone Putty Products are new silicone compounds (platinum catalyst) that can be easily mixed and applied by hand to a variety of surfaces. Equinox™ Putty is mixed in equal amounts (1A:1B) by volume.