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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 1,000 cps | 80 cps |
| Pot Life | 35 seconds | 7 minutes |
| Cure Time | 2 hours | 30 minutes |
| Shore D Hardness | — | 70 |
| Specific Volume | 229 cu. in./lb. | 26.4 cu. in./lb. |
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
| FlexFoam-iT!™ 7 FR | Smooth-Cast™ 305 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 1,000 cps | 80 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 100A:88B | 100A:90B |
| Pot Life | 35 seconds | 7 minutes |
| Handling Time | 60 minutes | — |
| Cure Time | 2 hours | 30 minutes |
| Shore D Hardness | — | 70 |
| Expansion (approximate) | 8 times | — |
| Foam Density | 7 lb/ft³ | — |
| Specific Gravity | 0.11 g/cc | 1.05 g/cc |
| Specific Volume | 229 cu. in./lb. | 26.4 cu. in./lb. |
| Color | White | White |
| Tensile Strength | — | 3,000 psi |
| Tensile Modulus | — | 134,000 psi |
| Elongation @ Break | — | 7.5 % |
| Compressive Strength | — | 3,800 psi |
| Compressive Modulus | — | 44,900 psi |
| Flexural Strength | — | 4,000 psi |
| Flexural Modulus | — | 118,000 psi |
| Shrinkage | — | 0.0065 in. / in. |
| Heat Deflection Temp | — | 120 °F |
Product Description
FlexFoam-iT!™ 7 FR
FlexFoam-iT!™ Series foams are premium quality water blown flexible foams that can be used for a variety of industrial, special effects and art & crafts and projects. With several to choose from, uses include making theatrical props (swords, knives, hammers, etc.), industrial gaskets, custom padding and cushioning, and more. SO-Strong™, UVO™ or IGNITE™ colorants can be added for color effects.
Part A and B liquids are combined, mixed and poured into a mold or other form (apply release agent if necessary). Mixture will rise and cure quickly to a solid, flexible foam. Foams vary by density and offer good physical properties. FlexFoam-iT!™ 7 FR certifies to FMVSS-302 Flame Specification.
› Click here for more FlexFoam-iT!™ flexible foam products.
Smooth-Cast™ 305
The Smooth-Cast™ 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free. Vacuum degassing is not necessary. They offer the convenience of a 1A:1B by volume or 100A:90B by weight mix ratio. The differences between them are pot life and demold time.
These resins readily accept fillers (such as URE-FIL™ 3 from Smooth-On) and can be colored with SO-Strong™ or Ignite™ color tints (Smooth-Cast™ 325 series accepts pigments better than the Smooth Cast™ 300 series). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast™ 300 Series Liquid Plastics include reproducing small to medium size sculptures, making prototype models, special effect props and decorative jewelry.