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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 4,400 cps | 2,000 cps |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Pot Life | 20 minutes | 30 minutes |
| Shore D Hardness | 88 | — |
| Shore A Hardness | — | 45 |
| Specific Volume | 17.6 cu. in./lb. | 26.4 cu. in./lb. |
| Color | Metal Gray | Off White |
| Tensile Strength | 3,250 psi | 886 psi |
| Elongation @ Break | 1 % | 900 % |
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
| TASK™ 18 | VytaFlex™ 45 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 4,400 cps | 2,000 cps |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 26A:100B | 1A:1B |
| Pot Life | 20 minutes | 30 minutes |
| Cure Time | 16 hours | 16 hours |
| Shore D Hardness | 88 | — |
| Shore A Hardness | — | 45 |
| Specific Gravity | 1.57 g/cc | 1.04 g/cc |
| Specific Volume | 17.6 cu. in./lb. | 26.4 cu. in./lb. |
| Color | Metal Gray | Off White |
| Die C Tear Strength | — | 100 pli |
| Tensile Strength | 3,250 psi | 886 psi |
| Tensile Modulus | 514,000 psi | — |
| Elongation @ Break | 1 % | 900 % |
| 100% Modulus | — | 116 psi |
| Compressive Strength | 8,420 psi | — |
| Compressive Modulus | 97,300 psi | — |
| Flexural Strength | 10,700 psi | — |
| Flexural Modulus | 86,000 psi | — |
| Shrinkage | 0.0006 in. / in. | <.001 in. / in. |
| Heat Deflection Temp | 149 °F | — |
Product Description
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.
VytaFlex™ 45
Using Smooth-On’s exclusive “V-Polymer™” technology, VytaFlex™ urethane rubbers offer superior physical and performance properties for casting concrete. VytaFlex™ urethanes are available in 10A, 20A, 30A, 40A, 45A, 50A and 60A Shore hardness’s and feature convenient one-to-one by volume mix ratios.
Vacuum degassing is not necessary and VytaFlex™ rubbers cure with negligible shrinkage to a durable rubber that will last in production.
VytaFlex™ mold rubbers work especially well for casting pigmented / colored concrete. Molds made with VytaFlex™ Series urethanes will render accurate and uniform colored castings.
FOR COMMERCIAL/INDUSTRIAL USE ONLY