Polytek® Casting Foams Technical Reference Chart Series Product Mix Ratio Mix Viscosity (cP) Cream Time Rise Time Tack-Free Time Demold Time Free-Rise Density (lb/ft³) Molded Density (lb/ft³) PolyFoam R-2 1A:1B by weight or volume 500 30 sec. 3 min. 10 min....
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Polytek® Casting Foams Technical Reference Chart Series Product Mix Ratio Mix Viscosity (cP) Cream Time Rise Time Tack-Free Time Demold Time Free-Rise Density (lb/ft³) Molded Density (lb/ft³) PolyFoam R-2 1A:1B by weight or volume 500 30 sec. 3 min. 10 min. 30 min. 2.5 4-8 PolyFoam | Rigid Polyurethane PolyFoam R-5 1A:1B by weight or volume 1,100 45 sec. 2 min. 3 min. 10-15 min. 5 8-20 Casting Foam PolyFoam R-8 1A:1B by weight or volume 1,100 45 sec. 2 min. 3 min. 10-15 min. 8 8-20 PolyFoam | PolyFoam F-3 1A:2B by weight 2,000 25 sec. 1.5 min. 3 min. 10 min. 3 5-8 Flexible Polyurethane Casting Foam PolyFoam F-5 1A:1B by weight or volume 1,400 45 sec. 3-5 min. 25 min. 30-60 min. 5 8-15 SiliFoam | Flexible Platinum-Cured PlatSil® SiliFoam 1A:1B by weight or volume 7,500 30-45 sec. 4 min. ND 30 min. 15 ND Silicone Foam ND = Not Determined Note on PolyFoam Compaction Calculation: Determine the volume of the space you want to fill with foam in cubic inches (in³). Convert the volume to ft³ b
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