Dimension standard problem in valve bonnet gasket

[yldrmkara]

When we want to change the gaskets on valve bonnets, I encounter different dimensions for each brand. Is there a dimension standard for bonnet gaskets in this sector? Or does anyone have experience on this subject?

 

[reverman]

No body-bonnet gaskets are left to the manufacture. sometimes it might be coincidence one lines up with a standard size but in general they are custom per manufacture.