Thermoset polyurethane elastomer called PU, the English name Casting Polyurethane, commonly known as the distinctions of plastic, rubber spring, is a polymer polyol and isocyanate, chain cross-linked together, a new type of synthetic materials such as plastics and rubber is between the . Depending on the polyurethane elastomer backbone structure, is divided into two kinds of polyether and polyester. PU rods: thermoset polyurethane elastomer called PU, the English name Casting Polyurethane, commonly known as the distinctions of plastic, rubber spring, is a polymer polyol and isocyanate, chain linkage is made between a plastic and rubber between the new synthetic materials. Depending on the polyurethane elastomer backbone structure, is divided into two kinds of polyether and polyester. PU rods are resistant to chemical corrosion resistance, tensile strength, high flexibility, high pressure load, high abrasion strength, shock absorption and strong, tear-resistant, radiation-resistant, high strength, high load and shock absorption cushioning, good performance. In a wide range of hardness (Shore A10 to Shore D75) can maintain a high elasticity. Its unique combination of excellent performance is ordinary plastic and rubber are not available. Suitable for shock absorption pad metallurgy, mining, petroleum, automobiles, building materials, sports, heavy machinery, large stamping equipment, pads, springs, and do all kinds of metal plates, tubes red wood mold. Friction general machinery equipment, the role of a buffer or shock absorber is ideal for mold spring.