PolyFoam R-5 is a two-part, rigid polyurethane casting foam. This self-skinning foam has a free-rise density of 5 lb/ft³, but should be cast at a density of 8 to 20 lb/ft³ to achieve good surface detail and mold fill. Generally, PolyFoam products should be cast in TinSil® or PlatSil® silicone molds.Barrier coats (e.g., a fast-drying primer paint) can be applied to silicone molds before casting foam in order to produce pre-primed parts right out of the mold. These foams can also be poured into Poly 74 & 75-Series polyurethane rubber molds that have been coated with PolyCoat Sealer & Release Agent. FOR INDUSTRIAL/PROFESSIONAL USE ONLY. TECHNICAL SPECIFICATIONS Mix Ratio by Volume: 1A:1B Mix Ratio by Weight: 1A:1B Mixed Viscosity: 1,100 cP Cream Time: 45 sec. Rise Time: 2 min. Tack-Free Time: 3 min. Free-Rise Density: 5 lb/ft³ Molded Density Range: 8-20 lb/ft³ Demold Time: 10-15 min. Kit Components PolyFoam R-5 Components 16-lb kit includes 8 lb of PolyFoam R-5 Part A (~1 gallon)8 lb of PolyFoam R-5 Part B (~1 gallon) 80-lb kit includes 40 lb of PolyFoam R-5 Part A (~5 gallons)40 lb of PolyFoam R-5 Part B (~5 gallons)
