The same of O-ring and gasket: both meet this implicit condition: when the sealing contact pressure is greater than the pressure of the sealed medium, keep the sealing effect;When the sealing contact pressure is less than the pressure of the sealed medium, the gasket or O-ring is pushed open, and the medium appears a lot of leakage.

The difference between the O-ring and the gasket: the flat gasket seal consists of gaskets, flanges and bolts, forming a messy statically indeterminate system;The seal contact pressure is provided by the deformation of the bolt.The contact pressure distribution in the flat gasket operation is uniform. When the medium pressure is shaken and greater than the contact pressure, leakage may occur.

In contrast: both of them can be matched for the condition with constant pressure;However, in variable working conditions, when the pressure rises, it is possible to exceed the gasket contact pressure scale, and leakage occurs in the media jacking seal clearance.O ring blast gasket.

In applications, gaskets are used only for static seals, and O-rings can be used for both static and dynamic seals for reciprocating linear motion.In the planning, the traditional sealing planning method of gasket is not tight enough, and the new planning specification of flange gasket is in the process of test and discussion.The planning of O-ring only needs to be determined according to groove scale, which is simple and reliable, convenient and useful.In fact, whether the O-ring is still gasket, the most important is suitable, can be better to play its sealing effect.