How to identify the cause of leakage of fluorine rubber O-ring and how to identify it

Fluorine rubber O-ring is widely used for sealing diesel locomotives, automobiles, tractors, construction machinery, machine tools, and various hydraulic and pneumatic components. It can bear the sealing of fixed, reciprocating, and rotary movements. In the sealing of mechanical products, O-ring rubber sealing ring accounts for more than 50%; High temperature resistance is superior to silicone rubber, with strong chemical resistance.
In our daily work, leakage occurs during static testing of the installation. After the installation and commissioning of the mechanical seal, it is generally necessary to conduct a static test to investigate the leakage amount. If the leakage is small, it is mostly due to problems with the dynamic or static ring sealing ring; When the leakage is large, it indicates that there is a problem between the dynamic and static ring collision pairs. On the basis of investigating the leakage amount and identifying the leakage position, manually turn the vehicle for investigation. If there is no significant change in the leakage amount, there is a problem with the static and dynamic ring seals; If there is a significant change in leakage during turning, it can be concluded that there is a problem with the dynamic and static ring collision pair; If leaking media erupts along the axial direction, there are many problems with the dynamic ring seal ring. If leaking media erupts around or leaks out of the water cooling hole, it is mostly due to the failure of the static ring seal ring.
The leakage channels of fluorine rubber O-ring can also exist together, but there are generally primary and secondary differences. Only by careful investigation and familiarity with the structure, can you correctly identify them. Leakage during trial work. After passing the static test, the centrifugal force generated by high-speed rotation during operation of the mechanical seal for the pump will restrain the leakage of the medium. Therefore, during the trial operation, the leakage of the mechanical seal during the cleaning of the shaft to shaft and the failure of the end cover seal are basically caused by the destruction of the dynamic and static ring collision pairs.