There is a liquid film on the contact surface of the mechanical seal to achieve the lubrication effect of the mechanical seal

There is a liquid film on the contact surface of the mechanical seal to achieve the lubrication effect

2021-07-28 10:34

Regardless of the material used for mechanical seals, a layer of liquid film must be maintained between the contact surfaces to lubricate. However, in the stuffing box, the combination of spring load and hydraulic pressure can make the mechanical seal sealing surface play a good sealing effect. However, if the mechanical seal seal pressure is too high, it will affect the formation of a liquid film between the contact surfaces, resulting in increased heat and premature wear. If the sealing pressure of the mechanical seal is too low, the gap between the contact surfaces will increase, which will easily cause liquid leakage.

Mechanical seal manufacturers are constantly striving to improve the flatness of the contact surface, and they use special polishing plates for grinding. It is then inspected with a grating plate using a monochromatic light source. Starting from this concept, it is very important that the sealing contact surfaces of these mechanical seals must be handled with care and that the installation instructions be strictly followed to ensure that the sealing surfaces are properly protected and seated correctly.