Poly 74-29 Liquid Rubber
Poly 74-29 is a 1A:1B mix, A30-A32 hardness, liquid polyurethane rubber that can be demolded in ~16 hours. This rubber is available in a black or white color. Molds made with Poly 74-29 exhibit high strength and high elongation properties. They are well-suited for casting materials such as concrete, plaster (for millwork, home décor, etc.), wax (candles & lost wax varieties) and resins (polyurethane, polyester, epoxy – with proper release agents).
Poly 74-29 molds can be poured as supplied or brushed-on by mixing in Poly Fiber II thickener. For brush-on application, 74/75 Part X accelerator can be used to speed the process. Poly 74-29 liquid rubber is an excellent multi-purpose, economical mold material that will provide long mold life, durability and consistent performance under high volume casting applications.
|Mix Ratio||Shore Hardness||Pour Time||Cured Color||Mixed Viscosity||Specific Volume||Demold Time|
|1A:1B||A30||30 min.||White or Black||2,800 cP||27.5 in³/lb||~16 hr.|
|Accessories: 74/75 Part C Softener, 74/75 Part X Accelerator, PolyFiber II Thickening Agent, UV Additive, Tietex® Fabric, Poly Purge Aerosol Dry Gas|