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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | 4,400 cps |
| Mix Ratio By Volume | 1A:1B | N/A (gram scale required) |
| Pot Life | 30 minutes | 20 minutes |
| Cure Time | 4 hours | 16 hours |
| Shore D Hardness | — | 88 |
| Shore A Hardness | 00-20 | — |
| Specific Volume | 26.0 cu. in./lb. | 17.6 cu. in./lb. |
| Color | Translucent | Metal Gray |
| Tensile Strength | 160 psi | 3,250 psi |
| Elongation @ Break | 845 % | 1 % |
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
| Ecoflex™ 00-20 | TASK™ 18 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | 4,400 cps |
| Mix Ratio By Volume | 1A:1B | — |
| Mix Ratio By Weight | 1A:1B | 26A:100B |
| Pot Life | 30 minutes | 20 minutes |
| Cure Time | 4 hours | 16 hours |
| Shore D Hardness | — | 88 |
| Shore A Hardness | 00-20 | — |
| Specific Gravity | 1.07 g/cc | 1.57 g/cc |
| Specific Volume | 26.0 cu. in./lb. | 17.6 cu. in./lb. |
| Color | Translucent | Metal Gray |
| Die B Tear Strength | 30 pli | — |
| Tensile Strength | 160 psi | 3,250 psi |
| Tensile Modulus | — | 514,000 psi |
| Elongation @ Break | 845 % | 1 % |
| 100% Modulus | 8 psi | — |
| Compressive Strength | — | 8,420 psi |
| Compressive Modulus | — | 97,300 psi |
| Flexural Strength | — | 10,700 psi |
| Flexural Modulus | — | 86,000 psi |
| Shrinkage | <.001 in. / in. | 0.0006 in. / in. |
| Heat Deflection Temp | — | 149 °F |
| Useful Temperature (min) | -65 °F | — |
| Useful Temperature (max) | 450 °F | — |
Product Description
Ecoflex™ 00-20
Ecoflex™ rubbers are platinum-catalyzed silicones that are versatile and easy to use. Ecoflex™ rubbers are mixed 1A:1B by weight or volume and cured at room temperature with negligible shrinkage. Low viscosity ensures easy mixing and de-airing. Cured rubber is very soft, very strong and very “stretchy”, stretching many times its original size without tearing and will rebound to its original form without distortion.
Certified Skin Safe - Cured Ecoflex™ 00-20 is skin safe and certified by an independent laboratory.
TASK™ 18
TASK™ 18 is a relatively low viscosity aluminum filled urethane casting resin that was developed specifically for making short run vacuum forming or thermoforming molds.
When Parts A and B are mixed in proper proportion, TASK™ 18 cures overnight at room temperature with negligible shrinkage to a very hard plastic that has a very high compressive and flexural strength. Cured TASK™ 18 can be polished, machined, drilled, painted, etc. TASK™ 18 is also used to make industrial production parts, prototype parts and tracing patterns.