Ring gasket- Groove one side only 1

[Gumpmaster]

I'm reviewing the design of a pressure vessel that uses a ring type gasket. The gasket is neoprene instead of metallic. There is a gasket groove on only one of the flange faces. The gasket seals against a flat face on the other side.

Does anyone know what a design like this might be based on?

 

[SnTMan]

Got a sketch?

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[Compositepro]

It sounds more like an o-ring rather than a gasket. In that case there is this:

https://www.parker.com/literature/ORD 5700 Parker_O-Ring_Handbook.pdf

 

[Gumpmaster]

Thanks Compositepro.

The condition I have is the face seal O-ring in the reference you sent. I'll look through that and see if it answers my questions.