The following are Several factors for missing seals at gaskets:
1. The gasket is not assembled in place, resulting in uneven stress.
2. There are impurities between the gasket and the static sealing surface.
3. The material selected for the gasket cannot bear the corrosion of the medium, or cannot work in the high-pressure vacuum environment.
4. The processing quality of the static sealing surface is unqualified, such as rough surface, scratches, uneven concave and convex defects.
5. The compression force of the gasket is not in place or there is no preload clearance on the contact surface.
6. The operation fluctuates greatly, resulting in a large pressure fluctuation of the eccentric hemisphere valve.
The above is the reason for the missing seal at the gasket of eccentric hemisphere valve, and I hope it can help you.
