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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 280 cps | 600 cps |
| Pot Life | 5 hours | 6 minutes |
| Cure Time | 24 hours | 1 hour |
| Color | Clear | Opaque White |
| Tensile Strength | 6,630 psi | 2,720 psi |
| Tensile Modulus | 572,000 psi | 126,000 psi |
| Compressive Strength | 9,610 psi | 5,450 psi |
| Compressive Modulus | 91,300 psi | 60,000 psi |
| Flexural Strength | 10,980 psi | 5,450 psi |
| Flexural Modulus | 410,000 psi | 170,000 psi |
| Shrinkage | 0.002 in. / in. | 0.0042 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 | TASK™ 15 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 280 cps | 600 cps |
| Mix Ratio By Weight | 100A:30B | 75A:100B |
| Pot Life | 5 hours | 6 minutes |
| Cure Time | 24 hours | 1 hour |
| Shore D Hardness | 80 | 75 |
| Specific Gravity | 1.10 g/cc | 1.12 g/cc |
| Specific Volume | 25 cu. in./lb. | 24.7 cu. in./lb. |
| Color | Clear | Opaque White |
| Tensile Strength | 6,630 psi | 2,720 psi |
| Tensile Modulus | 572,000 psi | 126,000 psi |
| Tensile Elongation | 1.8 % | — |
| Elongation @ Break | — | 20 % |
| Compressive Strength | 9,610 psi | 5,450 psi |
| Compressive Modulus | 91,300 psi | 60,000 psi |
| Flexural Strength | 10,980 psi | 5,450 psi |
| Flexural Modulus | 410,000 psi | 170,000 psi |
| Shrinkage | 0.002 in. / in. | 0.0042 in. / in. |
| Heat Deflection Temp | 115 °F | 117 °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.
TASK™ 15
TASK™ 15 is a premium performance urethane resin that has very high impact strength, even when cast in thin-wall sections. Pot life is 6 minutes and handling time 60 minutes at room temperature. Resin cures with negligible shrinkage.
Vibrant colors are possible by adding small amounts of SO-Strong™ tints, UVO™ pigments or IGNITE™ fluorescent colors.
Plastic fully cures with negligible shrinkage and can be machined, sanded and/or painted. TASK™ 15 features a gradual cure profile, making it ideal for rotational casting applications (making hollow parts).
Applications include making very tough prototype parts and limited run production castings as well as rotationally cast parts such as mannequins.