Polytek 75-90 Polyurethane Liquid Mold Rubber
Poly 75-90 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to an opaque amber, Shore A90 rubber. This is the hardest rubber in the 75-Series line of polyurethane mold rubbers. Poly 75-90 is a pourable rubber, but it can be easily thickened with PolyFiber II Thickener for brush-on application.
Mix Ratio: 2A/ 1B by weight
Shore Hardness: A90
Cured Color: Opaque Amber
Mixed Viscosity: 6000 cP
The color of polyurethane Part Bs may change in color from batch to batch or may darken with age, but product performance is not affected. For additional physical property specifications, refer to the Physical Properties Bulletin.
Poly 75-Series Liquid Rubbers consist of two parts (A and B), which, after mixing, cure at room temperature to fl exible rubber. Molds made with Poly 75-Series products are excellent for casting concrete, plaster and wax. In addition, Poly 75-Series molds can be used to cast various resins and foams when properly prepared. Poly 75-Series Liquid Rubbers are formulated for good economy with high performance and durability