Poly 74-44 Liquid Rubber
Poly 74-44 is a 2A:1B mix, A45-A48 hardness, liquid polyurethane rubber that can be demolded after ~16 hours. This rubber has high elongation and tear strength properties.
It is designed for making high-performance rubber molds for casting materials such as plaster (millwork, home décor, etc.), wax (candles & lost wax varieties), concrete, GFRC, GRG and resins (polyurethane, polyester, epoxy – with proper release agents).
This rubber can be poured as supplied or may be thickened with PolyFiber II or Fumed Silica for brush-on application. Poly 74-44 liquid rubber is an excellent multi-purpose, economical mold material that will provide long mold life, durability and consistent performance under repeated casting.
|Mix Ratio||Shore Hardness||Pour Time||Cured Color||Mixed Viscosity||Specific Volume||Demold Time|
|2A:1B||A45||20 min.||Gray||3,500 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|