Exclusively used in industrial production applications, urethane is a family of rubbers and plastics materials that are used for making molds. Urethane rubber is widely known for its tough properties, being abrasion-resistant, economical, relatively simple to mix and apply, and flexible once it is formed into a mold. The urethane rubber molds are then used in industrial design projects, such as sculpture replication or stamping designs into concrete. This makes urethane rubber one of the most economical mold rubber products ever to be utilized.
In the urethane family, urethane rubber is considered to be one of the more tensile, durable, and cheap materials to work with when compared to silicone. While silicone does not need a spray-on mold release agent, it is not as easily resistant to abrasion and is therefore used in more delicate casting processes. Not only does urethane rubber have a high tear strength, but it is reusable, retains its shape, and comes in a range of malleabilities.