Why choose a mechanical seal, what is the good thing? -Machinery Seal-

Why choose a mechanical seal, what is the good thing?

(1) The structure is reliable, and the leakage can be limited to a small amount. As long as the surface roughness and flatness of the main sealing surface can meet the requirements, the mechanical seal can achieve very little leakage, or even invisible to the naked eye.

(2) Long life. In the mechanical seal, the main wear part is the end face of the seal friction pair. Because the wear amount of the seal end face is not large under normal working conditions, it can generally be used continuously for 1 to 2 years, and it can also be used for 5 to 10 years in special occasions.

(3) No adjustment is required during operation. Since the mechanical seal relies on the spring force and fluid pressure to make the friction pair fit together, it automatically maintains contact during operation, and it does not need to be adjusted and compressed like ordinary soft packing after assembly.

(4) It has vibration resistance. At a speed of 3000r/min, the maximum amplitude does not exceed 0.05mm, and the PV value continues to increase

(5) The power loss is small. The packing seal works on the shaft or sleeve by the compression of the packing. The packing seal is in direct friction with the shaft, the tighter the packing is, the greater the friction and power consumption will be. The friction of the mechanical seal is in a semi-fluid friction state, the friction coefficient is very small, and the power loss of the mechanical seal is 10-50% of that of the packing seal.

(6) The scope of application is wide. When the medium is flammable, explosive, poisonous and harmful, a mechanical seal can be used to ensure the seal. It is also suitable for high temperature, low temperature, high pressure, vacuum, various speeds and equipment sealing of corrosive media.