1Featuring large elasticity, good stretching force and good shock absorption effect. 2Able to withstand high pressure, high/low temperature and high humidity environment. 3Excellent wear resistance, which is 3 to 5 times of natural rubber. 4Polyurethane rod has good chemical property, low lipophilic, and is almost impervious in fuel and mechanical oils. 5With wide hardness range, and it still has the elongation and resilience of rubber under high strength.