Section 4 of Mechanical Behaviors and Properties of Gaskets: Tensile Strength and Blow-out Resistance.
In the failure cases of sealing systems, gasket blow-out is a relatively common issue, and blow-out resistance is the core indicator specifically used to measure a gasket's ability to resist such failure. So, why does gasket blow-out occur?
The core reason is as follows: the frictional force generated between the gasket and the flange sealing surface cannot withstand the radial pressure exerted by the sealing medium. When the radial pressure of the medium exceeds the frictional force between them, the gasket will be "pushed away" from the sealing position, ultimately leading to sealing failure.
Specifically, the effective prevention of gasket blow-out depends on the interaction of three key factors:
First is gasket stress. The lower the gasket stress, the poorer the fit tightness between the gasket and the flange sealing surface, and the naturally smaller the generated frictional force.
Second is the friction coefficient between the gasket and the flange sealing surface. The smaller the friction coefficient, the weaker the adhesion between the two, and the corresponding reduction in the ability to resist radial pressure.
Third is the operating pressure of the medium. The higher the operating pressure, the greater the radial thrust exerted by the medium on the gasket, and the higher the risk of gasket blow-out.
In practical applications, these three factors need to be comprehensively considered to effectively reduce the possibility of gasket blow-out.
Ingenious Seal Mastery
For sealing leakage issues, Baohua provides solutions. If you have any doubts about sealing technology, please pay attention to Suzhou Baohua and feel free to consult, comment, or leave a message! Thank you all! we will continue to talk about tensile strength and blow-out resistance. See you next time!
Email：marketing@mybmc.com.cn 
