PolyBond is a flexible polyurethane adhesive that’s great for repairing torn molds. This adhesive has a 1A:3B mix ratio (by weight), ~3 minute working time and ~15 minute cure.
This 2-lb kit includes:
0.5 lb of PolyBond Part A (~1 pint)
1.5 lb of PolyBond Part B (~1 quart)