PU rods are resistant to chemical corrosion, tensile strength elastic, high pressure load, high strength and abrasion, shock absorption, resistance to tearing, good performance radiation-resistant, high strength, high load and shock absorption cushioning and so on. 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 damping plate 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 and equipment, from the warm punch or damping effect, is the ideal mold spring.