Poly 74-55 Liquid Rubber
At Shore A55, Poly 74-55 liquid polyurethane rubber cures to the firmest rubber in the 74-Series (view 75-Series rubbers for harder options). It also has the highest tensile and tear strength in the series.
Molds made with Poly 74-55 are widely used for dimensionally stable plaster castings and are also used for concrete, wax, plaster, and limited resin castings as well.
Poly 74-55 liquid rubber can be poured as supplied or can be thickened with Poly Fiber II for creating brush-on molds.
|Mix Ratio||Shore Hardness||Pour Time||Cured Color||Mixed Viscosity||Specific Volume||Demold Time|
|4A:1B||A55||15 min.||Amber||4,000 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|