Distributor O ring/ gasket part #

No paper used, it wouldn't last long anyway lol. It's a 340 block and distributor sits flush without oring.
Oring only, same distributor you worked on Ray.

John, it has a metal collar with set screw but it isn't the issue as it sits down flush with no oring.
Something so simple...I shoulda put verniers to it 6 orings back...:rolleyes:
Steve the fel pro ones are way to fat with the paper gasket and that paper cant be used with a point dist, not a good ground. Just FYI
I have them if needed.

Silly question but you don’t have a lock collar on your distributor shaft like many of us run and it’s locked on in the wrong spot.