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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Brushable | 7,000 cps |
| Mix Ratio By Volume | 1A:1B | N/A (gram scale required) |
| Pot Life | 18 minutes | 90 minutes |
| Cure Time | 16 hours | 4 hours |
| Barcol 935 Hardness | — | 93 |
| Shore A Hardness | 40 | — |
| Specific Volume | 27 cu. in./lb. | 18.22 cu. in./lb. |
| Color | Grey | Off White |
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 | EpoxAcast™ 650 + 102 Hardener | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Brushable | 7,000 cps |
| Mix Ratio By Volume | 1A:1B | — |
| Mix Ratio By Weight | 100A:95B | 100A:13B |
| Pot Life | 18 minutes | 90 minutes |
| Thin Film Recoat Time | 60 minutes | — |
| Cure Time | 16 hours | 4 hours |
| Barcol 935 Hardness | — | 93 |
| Shore A Hardness | 40 | — |
| Specific Gravity | 1.025 g/cc | 1.52 g/cc |
| Specific Volume | 27 cu. in./lb. | 18.22 cu. in./lb. |
| Color | Grey | Off White |
| Die C Tear Strength | 67 pli | — |
| Tensile Strength | 420 psi | — |
| Tensile Modulus | — | 1,503,000 psi |
| Ultimate Tensile | — | 6,000 psi |
| Tensile Elongation | — | 0.42 % |
| Elongation @ Break | 577 % | — |
| Compressive Strength | — | 16,350 psi |
| Compressive Modulus | — | 142,600 psi |
| Flexural Strength | — | 5,890 psi |
| Flexural Modulus | — | 710,000 psi |
| Shrinkage | <.001 in. / in. | 0.001 in. / in. |
| Heat Deflection Temp | — | 129 °F |
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.
EpoxAcast™ 650 + 102 Hardener
EpoxAcast™ 650 is a mineral filled general purpose casting epoxy resin that is low cost and versatile. It features a low mixed viscosity for minimal bubble entrapment.