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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Brushable | Paste |
| Pot Life | 18 minutes | 40 minutes |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 40 | — |
| Color | Grey | Off-White |
| Elongation @ Break | 577 % | 0.83 % |
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 | Plasti-Paste™ EPOXY | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Brushable | Paste |
| Mix Ratio By Volume | 1A:1B | 2A:1B |
| Mix Ratio By Weight | 100A:95B | 2A:1B |
| Pot Life | 18 minutes | 40 minutes |
| Thin Film Recoat Time | 60 minutes | 60 minutes |
| Cure Time | 16 hours | 16 hours |
| Shore D Hardness | — | 80 |
| Shore A Hardness | 40 | — |
| Specific Gravity | 1.025 g/cc | 1.0 g/cc |
| Specific Volume | 27 cu. in./lb. | 27.73 cu. in./lb. |
| Color | Grey | Off-White |
| Die C Tear Strength | 67 pli | — |
| Tensile Strength | 420 psi | — |
| Tensile Modulus | — | 470,000 psi |
| Ultimate Tensile | — | 3,320 psi |
| Elongation @ Break | 577 % | 0.83 % |
| Compressive Strength | — | 7,700 psi |
| Compressive Modulus | — | 138,000 psi |
| Flexural Strength | — | 9,186 psi |
| Flexural Modulus | — | 2,273,000 psi |
| Shrinkage | <.001 in. / in. | 0.001 in. / in. |
| Heat Deflection Temp | — | 160 °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.
Plasti-Paste™ EPOXY
Plasti-Paste™ EPOXY is an epoxy-based version of Smooth-On’s popular urethane Plasti-Paste™ products. It is a two component, fiber-filled epoxy designed for vertical surface application. Part A is a paste and Part B is a liquid. Mix ratio is 2A: 1B by volume or weight. Pot life is 40 minutes and cure time is 16 hours at room temperature depending on mass. Applying heat can reduce cure time. Mixed material holds a vertical surface without sagging and cures very rigid and strong.
Liquid material can be colored with UVO™ colorants and cured epoxy can be sanded, machined and painted with acrylic enamel paints. This plastic can used as a support shell or mother mold material to reinforce rubber molds during casting. It can also be used for creating themed environments, creating art or special effects. This epoxy is also a powerful adhesive and can be used as a repair material for a variety of industrial applications.