Excellent properties of polyurethane seals

Seals should generally have good physical and mechanical properties, high resilience, small compression set, reliable sealing, convenient processing and long service life. Silicone rubber seals are resistant to high temperature and low temperature, radiation resistance, vacuum resistance, non-polluting and non-toxic. The quality of the sealing ring directly affects the production efficiency of the mechanical equipment. If you buy inappropriate products, it will have a great impact on the efficiency of the equipment.

Polyurethane seals can be produced without molds by turning, with special shapes and non-standards, and are immediately desirable. They have the advantages of short production cycle and high machining accuracy. Polyurethane elastomer is recognized as a new type of polymer material with green environmental protection and excellent performance.

Polyurethane turning sealing - Polyurethane thermoplastic elastomers are polyester type and polyether type, white random spherical or columnar particles, relative density 1.10~1.25, polyether type glass transition temperature is 140-150 degrees. The glass transition temperature of polyester type is 150-160°C, thus giving many excellent properties, such as high modulus, high strength, excellent abrasion resistance, chemical resistance, hydrolysis resistance, high and low temperature resistance and mildew resistance. These good properties make thermoplastic polyurethane widely used in many fields such as shoe materials, cables, clothing, automobiles, medicine and health, pipes, films and sheets. The final product generally does not need to be vulcanized and cross-linked, which can shorten the reaction cycle and reduce energy consumption.