O-Ring sizes for a P/S Gear Box 69 Charger

[cudaken]

 I installed a new P/S box in my 69 Charger a few year's ago. Mounting point for the pressure line is leaking. When I got the box there was no O-ring with it. I bought what I tought was the right sizes but was wrong.

One I miss spelling about goes under the mounting point that is held on by two bolts and seal's the mounting point to the box.

Any Help

                            Cuda Ken

[Chryco Psycho]

I would  have take one apart & measure it