PolyFoam R-8 Rigid Casting Foam

PolyFoam R-8 Rigid Casting FoamPolyFoam R-8 is a 1A:1B mix ratio (by weight or volume), self-skinning, rigid polyurethane foam that has a free-rise density of 8 lb. per cubic foot.

PolyFoam rigid foams are excellent for casting functional as well as decorative objects that need to be lightweight and rigid. This product is also great for lightweight mold shells or mother molds. PolyFoam R-8 can be colored with PolyColor Dyes.

PolyFoam R-8 can be poured into PlatSil® or TinSil® silicone molds or into Poly 74-Series & 75-Series polyurethane molds that have been coated with PolyCoat Sealer & Release Agent.

For lower density rigid casting foam, consider PolyFoam R-2 & PolyFoam R-5.



Mix Ratio Mix Viscosity Cream Time Rise Time Tack-Free Time Demold Time Free-Rise Density Molded Density
1A:1B 1100 cP 45 sec. 2 min. 3 min. 10-15 min. 8 lb/ft³ 8-20 lb/ft³
Accessories: PolyColor DyesPoly Purge Aerosol Dry GasPolyCoat Sealer & Release Agent


Product Literature: Technical Bulletin | Safety Data Sheets | Sealer & Release Agent Selection Guide

Video Tutorials on YouTube: Casting with PolyFoam R-2 (lower density foam)


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