A key advantage of cast polyurethane is its ability to be easily bonded to other materials, such as many types of metal, composites, and to both reinforced and unreinforced plastics. These other components, commonly called inserts, can include bearings, wheel hubs, threaded fasteners, injection molded parts, G10 laminates, castings, etc. The bond is incredibly strong, exceeding in most cases the high tear strength of the bonded polyurethane. We also can successfully bond some thermoplastics to metals or other thermoplastics. Polyurethane bonds incredibly well to other materials, allowing you to enjoy the benefits of both materials.