TC-1630 is very hard, tough, fast setting filled 2-part polyurethane casting resin system which is ideal for: Foam Latex Molds, Vacuum Forming Tools, Silicone Prosthetic Molds, Industrial Molds, Rigid Parts, Composite Tools, and much more! TC-1630 is unique because it exhibits very low shrinkage when cast in mass, yet still cures quickly for producing molds and parts in a production setting. Its unique formulation also allows it to be cast into alginate life-cast molds without reaction to the presence of moisture. - Economical - Low Shrinkage/Low Exotherm - Fast Cure Time - Excellent Detail Reproduction - Low Moisture Sensitivity - Works Well with BJB Platinum Silicones