Suitable gasket for pressure vessels 3

[gh61]

I have a vessel with the following specifications, which has a bolted head,
which gasket is suitable for this vessel?
The upper head should be opened once a year.
design pressure: 178 bar
Design temperature: 140 C
inner diameter: 900

tanks

 

[SnTMan]

@A8yssUK - LOL

 

[A8yssUK]

@r6155
As with my first reply to the user of this custom flange they should contact somebody to evaluate it correctly and not estimate anything. A flange this size with these pressures is no joke. However, I can tell you for sure that I wouldn't start shouting about RTJ gaskets without knowing even half of the information that I required beforehand.