Gorilla Polyurethane Glue 250Ml PU Water Activated Glue table, Stainable, Sandable Temperature Resistant 100% Waterproof 250 ml Gorilla Polyurethane Glue 250Ml Gorilla Polyurethane Glue 250ml reacts when exposed to moisture, with the adhesive reacting and creating a foaming action that fills whilst it sticks. Gorilla Glue has an open working time of 20 minutes. The glue is brown in color, but dries a tan color, and is totally waterproof. Features Bonds; wood, stone, metal, ceramics, glass, foam, leather and dissimilar materials Waterproof and extreme temperature resistant Once dried the product is sandable, stainable, table and can also take a varnish Due to its foaming action, the glue gives greater coverage - up to 3 times the coverage of other glues