1. Durability: Good wear resistance and chemical resistance are the basic requirements for sealing rings. Polyurethane sealing rings have good wear resistance and oil resistance, and can be used in different temperature, pressure, and fluid environments. Moreover, the elastic recovery performance of polyurethane is also very good, which is conducive to the long-term use of sealing rings.

2. Sealing performance: The main function of a sealing ring is to seal, so its sealing performance must be considered when selecting a sealing ring. For example, fluorine rubber sealing rings have excellent oil resistance, acid and alkali resistance, and high temperature resistance, suitable for some high demand environments, such as aerospace, chemical and other fields.

3. Production cost: In addition to the above two factors, the production cost of sealing ring materials is also one of the factors that must be considered. Acrylate rubber sealing rings are widely used in fields such as automobiles and machinery due to their excellent oil resistance, high temperature resistance, and low price.