[Dhead]

"O" Ring Size Chart shows 13/16 ID and 15/16 OD 1/16 Cross Section.  I just use the cheap Buna N Nitrile O rings.  As a side note I needed some O rings after hours and bought a kit from Harbor Freight a few years ago.  They are falling apart in the container, I don't recommend them.


I highly recommend replacing the red pintle seals while you're in there.

Thanks! I have ordered 2 red pintle seals from Kleen-Rite. I will likely get the O rings from Grainger.