Structure and sealing mechanism of flange connection

Working mechanism: Through bolt pretightening, the gasket between the flange sealing surface is compressed and compacted, and fills the uneven gap on the flange sealing surface, preventing the permeability leakage of the medium through the capillary hole inside the gasket and the interface leakage between the gasket and the sealing surface. Thus achieving pre-seal.

The conditions to ensure that the flange connection seal does not leak are as follows: when pre-tightening, the pre-tightening specific pressure of the pre-tightening force acting on the gasket is not lower than the pre-tightening specific pressure; When working, the residual specific pressure acting on the gasket shall not be lower than the specific pressure of the working seal.

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