Flex Foam-iT 23 Lb FR

SKU: 800669

Size: Pint Kit
Sale price$32.50

unit(s) in Stock.


unit(s) in Stock.


unit(s) in Stock.


unit(s) in Stock.

* Price and availability may vary.
* If unit(s) in stock is 0, item is currently unavailable or special order.


Unit Size Net Weight
Pint Kit 2.8 lb
Gallon Kit 14.8 lb
Five Gallon Kit 74 lb



FlexFoam-iT 23 FR is a premium quality water blown flexible foam which has a density of 23 Lb/cu.ft. and meets UL-94 HB flame resistance requirements. Mix ratio is 85A:100B by weight, pot life is approximately 90 seconds, handling time is 1 hour and cure time is 2 hours. Expansion is about 2 times the liquid volume and color is white and can be further pigmented. FlexFoam-iT 23 FR flame rating is UL-94 HB, which is an Underwriter's Laboratories (UL) certification measuring flame resistance of materials used to produce devices and appliances.
Technical Properties
Mix Ratio by Weight 85A:100B
Mix Ratio by Volume N/A
Pot Life 90 seconds
Tack Free Time 60 minutes
Cure Time 2 hours
Color White
Mixed Viscosity 1,000 cps
Specific Volume 68 cu. in./lb.
Specific Gravity 0.37g/cc
Expansion (Approx.) 2 times
Foam Density 23 lb./cu. ft.



Thorough pre-mixing of both Part"A" and Part"B" in their original containers prior to measuring out. Specifically, failure to pre-mix Part"B" prior to dispensing will cause the ingredients in the system to remain unbalanced. Storing and working with materials in cold environments will cause the components of Parts "A" and "B" to separate (i.e. vinegar and oil). If these components are not brought back to proper room temperature and reconstituted this will cause failure in their cross-linking when mixed together.
Thorough mixing of Part"A" and Part"B" combined.Once combined together, Part"A" and Part"B" must be evenly and thoroughly blended scraping both sides and bottom of the mixing container. A double-mix pour technique, time allowing depending on product blended pot-life, will assist in the most successful mixing technique. Often with the foams, users will work quickly as materials generally have a short pot-life before expansion occurs and neglect a thorough mixing procedure.
Use of silicone-based release agents in molds where foams are cast, will cause collapse of the foam cell structure.
Mold configuration; if the mold is 'closed' and not capable of allowing gas to escape during the expansion & cure process of the foam, the de-molding procedure will result in the gases escaping from the cured foam causing collapse of the casting. Using a mold where the gases are allowed to escape during cure is important.
If the casting comes out of the mold collapsed; often it can be compressed which will cause it to re-inflate.
Cold molds can also contribute to foam collapse; sometimes materials will be kept at proper temperature, however, if the material is poured into a cold mold, that may cause cure-issues and collapse of the foam casting.
How To Improve The Surface Finish Of Foam Castings Using Back Pressure

Special Order Items
The products listed below are currently SPECIAL ORDER items and require pre order.
Lead times may vary - For more information please contact our staff.

800677 - Flex Foam-iT 23 Lb FR - Five Gallon Kit
800678 - Flex Foam-iT 23 Lb FR - Drum Kit
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