The selection of bearing sealing material and the application requirements

HZK Bearing factory how to select of bearing sealing material and the application requirements
Bearing sealing materials should meet the requirements of sealing function. Due to the different media to be sealed and the different working conditions of the equipment, the sealing materials are required to have different adaptability. The requirements for sealing materials are generally:
1) The material has good compactness and is not easy to leak the medium;
2) Have appropriate mechanical strength and hardness;
3) Good compressibility and resilience, small permanent deformation;
4) No softening, no decomposition at high temperature, no hardening and no brittle cracking at low temperature; 5) Good corrosion resistance, long-term work in acid, alkali, oil and other media, small changes in volume and hardness, and no adhesion on metal surfaces;
6) Small friction coefficient, good wear resistance
7) It has the flexibility combined with the sealing surface;
8) Good aging resistance and durability;
9) It is convenient to process and manufacture, cheap in price and easy to obtain materials.
Rubber is the most commonly used sealing material. In addition to rubber, graphite, polytetrafluoroethylene, and various sealants are suitable for sealing materials.