Cylinder stud o-rings? Gs1150

[TxGSrider]

Me and another member here (Gregory) are rebuilding an GS1150. We're gathering parts together so you'll probably here more questions from us in the future. Lol.
This question is about some o-rings that were in the case around the cylinder studs. They measure about 15.6mm OD, and I can't find them in the parts places online and they aren't in my "complete gasket set". Does anyone know the part number or the exact size so I can order them?
Thanks.

[bwringer]

Poke around in the "CYLINDER" fiches for other 1150 sub-models, and you'll find an o-ring with the part number 09280-11005 that appears to be what you're looking for (the "11" in that part number probably indicates an 11mm ID). It looks like some models had these and some didn't.

The images are terrible, but I think I see it, #9, in the diagram for this model: 1984 SUZUKI GS1150ESE - CYLINDER (GS1150ES3-ESE E.NO.101425~-MODEL F-F2-G)

That said, I've never worked on an 1150, so someone with specific experience may have something to add.

[TxGSrider]

Poke around in the "CYLINDER" fiches for other 1150 sub-models, and you'll find an o-ring with the part number 09280-11005 that appears to be what you're looking for (the "11" in that part number probably indicates an 11mm ID). It looks like some models had these and some didn't.

The images are terrible, but I think I see it, #9, in the diagram for this model: 1984 SUZUKI GS1150ESE - CYLINDER (GS1150ES3-ESE E.NO.101425~-MODEL F-F2-G)

That said, I've never worked on an 1150, so someone with specific experience may have something to add.

Thank you, I didn't check all the sub-models (I mean why would they only show up on some models?). You've helped me out allot!

Note: I clicked on the item an it lists the dimensions 2.4mm x 11mm I'd.)