What is a polyurethane adhesive?
Polyurethane adhesives are a thermoplastic glue or a polymer that contains replicas of organic chain units linked to urethane links. The chemical reaction between the polymers results in the creation of the adhesive. This glue can be extremely strong and resistant most forms of degradation.
What is polyurethane adhesive good for?
Polyurethane adhesives are truly multi-purpose products and can be used to bond a variety of building materials: wood, glass, concrete, metals, carpets, and more. If you are bonding two nonporous materials—like metal on metal—just make sure to moisten the surfaces before you glue them. Waterproof.

What is the difference between urethane and polyurethane adhesive?
Urethane is flexible and malleable, making it ideal for objects that have different shapes and forms, and it is used in liquid form. Polyurethane, on the other hand, is stiff and rigid and is ideal for firmer items, with many advantages over natural rubber.
Advantages of polyurethane adhesives include the following:
extremely tough;
good resistance to solvents;
high cohesive strength;
good impact resistance;
good abrasion resistance.