How to handle the leakage of a national standard pressure vessel flange seal?

If the flange sealing surface is damaged, repair the sealing surface and replace the flange.

2. If the gasket is under-pressure, corroded, or deformed, replace the gasket.

3. If bolts are loose or corroded, tighten or replace them.

4. If the flange face is not parallel or the center is off, cut and re-align or replace the flange.