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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Dough | 5,400 cps |
| Shore D Hardness | 50 | — |
| Shore A Hardness | — | 85 |
| Specific Volume | 61.6 cu. in./lb. | 25 cu. in./lb. |
| Color | Grey | Amber |
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
| Free Form™ AIR | URE-BOND™ II | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Dough | 5,400 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 100A:92B |
| Pot Life | — | 5 minutes |
| Handling Time | — | 60 minutes |
| Cure Time | — | 24 hours |
| Shore D Hardness | 50 | — |
| Shore A Hardness | — | 85 |
| Specific Gravity | 0.45 g/cc | 1.1 g/cc |
| Specific Volume | 61.6 cu. in./lb. | 25 cu. in./lb. |
| Color | Grey | Amber |
| Die C Tear Strength | — | 175 pli |
| Tensile Strength | — | 3,400 psi |
| Elongation @ Break | — | 121 % |
| 100% Modulus | — | 700 psi |
| Shrinkage | — | 0.0038 in. / in. |
| Heat Deflection Temp | 140 °F | — |
| Buoyant Force | 10.4 lb/ft³ | — |
Product Description
Free Form™ AIR
Free Form™AIR is an extremely lightweight epoxy putty suitable for an infinite variety of industrial and art-related applications. This is a low-odor, low shrinkage putty that is unique, inexpensive and easy to use. Free Form™AIR is mixed by hand with a 1A:1B by volume or weight mix ratio. It offers a long working time and cures overnight at room temperature to a hard, rigid epoxy that is very strong. Cured Free Form™AIR is so lightweight, it will float in water. It can be sanded, shaped, and drilled. It will readily accept any paint. Free Form can also be color pigmented with UVO™ or Ignite™ colorants.
URE-BOND™ II
URE-BOND™ II is a premium performance urethane adhesive compound that offers a strong flexible bond between many different surfaces. URE-BOND™ is ideal for adhering polyurethane rubber and other polymer products to many types of substrates (such as plaster, wood, cement, stone) and non-porous materials (such as glass, hard plastics and a variety of metals). URE-BOND™ II has also been used to repair torn polyurethane molds on a limited basis (with proper surface preparation). Working time is 5 minutes at room temperature (73° F / 23° C). Once mixed and applied, URE-BOND™ takes about 60 minutes to cure and yields a strong, flexible bond.