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FlexFoam-iT!™ 7 FR

Smooth-Cast™ ONYX™ FAST vs. FlexFoam-iT!™ 7 FR

Flame Rated Flexible Urethane Foam

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Key Differences

Product Type
  • Urethane Expanding Foams
  • Flame Rated Materials
  • Urethane Resins
Mixed Viscosity1,000 cps100 cps
Pot Life35 seconds2.5 minutes
Cure Time2 hours15 minutes
Shore D Hardness80
Specific Volume229 cu. in./lb.27.7 cu. in./lb.
ColorWhiteBlack
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 FRSmooth-Cast™ ONYX™ FAST
Product Type
  • Urethane Expanding Foams
  • Flame Rated Materials
  • Urethane Resins
Mixed Viscosity1,000 cps100 cps
Mix Ratio By Volume1A:1B100A:100B
Mix Ratio By Weight100A:88B120A:100B
Pot Life35 seconds2.5 minutes
Handling Time60 minutes
Cure Time2 hours15 minutes
Shore D Hardness80
Expansion (approximate)8 times
Foam Density7 lb/ft³
Specific Gravity0.11 g/cc1.09 g/cc
Specific Volume229 cu. in./lb.27.7 cu. in./lb.
ColorWhiteBlack
Tensile Strength5,840 psi
Tensile Modulus246,000 psi
Elongation @ Break4 %
Compressive Strength8,760 psi
Compressive Modulus77,400 psi
Flexural Strength8,280 psi
Flexural Modulus246,000 psi
Shrinkage0.010 in. / in.
Heat Deflection With Post Cure250 °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.

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Smooth-Cast™ ONYX™ FAST

Smooth-Cast™ ONYX™ is a mercury-free urethane resin that cures at room temperature to a deep black, solid plastic. ONYX™ resins offer the convenience of a 1A:1B by volume mix ratio and have very low viscosities, so they are easy to mix and pour. ONYX™ resins have an ultimate Shore hardness of 80D and offer higher physical properties and higher heat resistance vs. other general purpose resins.ONYX™ FAST resin has a pot life of 2.5 minutes and a cure time of 10-15 minutes. ONYX™ FAST is a good choice for creating fast cold cast bronze, brass, copper, nickel/silver, etc. effects.

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