C
mpare
T
l
Key Differences
| Product Type |
|
|
| Mixed Viscosity | 800 cps | 5,000 cps |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Pot Life | 2.5 minutes | 10 minutes |
| Cure Time | 24 hours | 30 minutes |
| Shore A Hardness | 90 | 25 |
| Color | Off-White | Translucent |
| Tensile Strength | 1,800 psi | 490 psi |
| Elongation @ Break | 125 % | 616 % |
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
| KX Flex™ 90 | Dragon Skin™ 25 NV | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 800 cps | 5,000 cps |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 100A:120B | 1A:1B |
| Pot Life | 2.5 minutes | 10 minutes |
| Handling Time | 30 minutes | — |
| Cure Time | 24 hours | 30 minutes |
| Shore A Hardness | 90 | 25 |
| Specific Gravity | 1.15 g/cc | 1.1 g/cc |
| Specific Volume | 24.1 cu. in./lb. | 25.16 cu. in./lb. |
| Color | Off-White | Translucent |
| Die B Tear Strength | — | 139 pli |
| Tensile Strength | 1,800 psi | 490 psi |
| Elongation @ Break | 125 % | 616 % |
| 100% Modulus | — | 66 psi |
| Shrinkage | 0.005 in. / in. | <.001 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 450 °F |
| Dielectric Strength | — | >350 volts/mil |
Product Description
KX Flex™ 90
KX Flex™ Series urethanes are fast setting flexible urethane casting elastomers that cure quickly and offer exceptional physical and performance properties including high impact resistance. KX Flex™ Series urethanes are easy to color using SO-Strong™, UVO™ or IGNITE™ colorants. KX Flex™ urethanes are phthalate free, mercury free and MOCA free.
KX Flex™ Series urethanes have a pot life of 2.5 minutes and handling time of 30 minutes (depending on mass). With Shore hardness values of 40A, 60A and 90A, this material is used for a variety of applications including fast mold making, fast model duplication, prototyping, durable miniatures, props and special effects, or making parts that are impact resistant. Fully cured castings are flexible, tough and durable.
› Click here for more KX Flex™ products.
Dragon Skin™ 25 NV
Dragon Skin™ NV Series silicones are easy to use translucent platinum silicones that are mixed 1A:1B by volume (no weighing scale necessary). They feature very low viscosities and vacuum degassing is not required for most applications.
Properly cured Dragon Skin™ 25 NV complies with 21 CFR 177.2600 "Rubber articles intended for repeated use" for use with dry food and aqueous food only. This material has been tested by an independent laboratory to comply with 21 CFR 177.2600(e), water extractable limits for repeated use in aqueous food. This material is not intended for repeated use in contact with fatty foods.