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Seal gasket failure, leakage and avoidance measures
Sep 25, 2018

      Leakage is essentially a flow of matter in space, that is, from a limited space to an infinite space, or from the inside to the outside, and vice versa. The reason why the medium flows between the two is that it leaks the power source of the province. The leakage usually occurs at the two ends of the interface. There are two conditions: one is the cross-sectional area available for leakage at the junction, and the other is There is a certain pressure difference or concentration difference at both ends.


      First of all, there will be more or less precision problems in the processing of any equipment or machinery. It is inevitable that there will be gaps on the sealing surface, and it is difficult to achieve complete fitting, especially when the contact surfaces of the two are high in hardness and there is no plastic deformation. At times, such as the connection of the flange joint, and the medium, especially the gas and liquid advantages, are pervasive. So the leak will inevitably happen.


     Sealing gasket failure causes leakage and avoidance measures: knowing the cause of the leak, then the problem must be solved from two aspects, one is how to reduce the leakage cross-sectional area, and the other is to reduce the leakage power. The overall increase in resistance to flow.


     The best way to do this is to use a gasket because the gasket can be plastically deformed after applying sufficient preload to the sealing surface. When the stress is increased enough to cause significant plastic deformation of the surface, the gap of the sealing surface can be filled and the leakage channel can be blocked.


      The purpose of using the gasket is to use the gasket material to easily produce plastic deformation under the action of the compaction load, so as to fill in the unevenness of the flange sealing surface, thereby achieving sealing.