C
mpare
T
l
Key Differences
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | 1,140 cps |
| Pot Life | 30 minutes | 6 minutes |
| Cure Time | 4 hours | 60 minutes |
| Shore D Hardness | — | 82 |
| Shore A Hardness | 00-20 | — |
| Specific Volume | 26.0 cu. in./lb. | 15.9 cu. in./lb. |
| Color | Translucent | Tan |
| Tensile Strength | 160 psi | 3,550 psi |
| Elongation @ Break | 845 % | 1.43 % |
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 | Smooth-Cast™ 380 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 3,000 cps | 1,140 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 1A:1B |
| Pot Life | 30 minutes | 6 minutes |
| Cure Time | 4 hours | 60 minutes |
| Shore D Hardness | — | 82 |
| Shore A Hardness | 00-20 | — |
| Specific Gravity | 1.07 g/cc | 1.74 g/cc |
| Specific Volume | 26.0 cu. in./lb. | 15.9 cu. in./lb. |
| Color | Translucent | Tan |
| Die B Tear Strength | 30 pli | — |
| Tensile Strength | 160 psi | 3,550 psi |
| Tensile Modulus | — | 490,000 psi |
| Elongation @ Break | 845 % | 1.43 % |
| 100% Modulus | 8 psi | — |
| Compressive Strength | — | 7,860 psi |
| Compressive Modulus | — | 126,000 psi |
| Flexural Strength | — | 4,870 psi |
| Flexural Modulus | — | 315,000 psi |
| Shrinkage | <.001 in. / in. | 0.0025 in. / in. |
| Heat Deflection Temp | — | 125 °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.
Smooth-Cast™ 380
Smooth-Cast™ 380 is a filled, high density casting resin formulated for a variety of tooling applications. This no-odor resin features a convenient 1A:1B mix ratio by volume, a 6 minute pot-life and cure time of about 60 minutes depending on mass and temperature. Low viscosity ensures minimal bubble entrapment and long term shrinkage of cured resin is very low. Cured material is very strong can be machined, drilled, sanded, etc. Color can be added with SO-Strong™ color tints.