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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 280 cps | Light Paste |
| Pot Life | 5 hours | 40 minutes |
| Color | Clear | Dark Red |
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 | EpoxAcoat™ HT | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 280 cps | Light Paste |
| Mix Ratio By Weight | 100A:30B | 100A:18B |
| Pot Life | 5 hours | 40 minutes |
| Thin Film Working Time | — | 75 minutes |
| Thin Film Recoat Time | — | 4 hours |
| Cure Time | 24 hours | 24 hours |
| Shore D Hardness | 80 | 85 |
| Specific Gravity | 1.10 g/cc | — |
| Specific Volume | 25 cu. in./lb. | — |
| Color | Clear | Dark Red |
| Tensile Strength | 6,630 psi | — |
| Tensile Modulus | 572,000 psi | — |
| Tensile Elongation | 1.8 % | — |
| 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. | — |
| Heat Deflection Temp | 115 °F | 133 °F |
| Heat Deflection With Post Cure | — | 284 °F |
| Refractive Index | 1.565 nm | — |
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.
EpoxAcoat™ HT
EpoxAcoat™ HT is a slightly thixotropic epoxy gel coat that offers high heat resistance (post cure required). Cured epoxy is tough and offers exceptional abrasion resistance. This surface coat will wet out well over a variety of surfaces with good sag resistance. Applications include laminating, precision tooling, master and pattern making, core boxes and fixtures.
Use as a surface coat for EpoxAmite™ HT high temperature laminating epoxy.