Re: pressurized tank o ring
bvav, you are lucky that you have such an old one. On yours, you can remove the hose nipples and use a punch through the holes that they came out of to knock the brass bushings out of the connector housing. Put in a new o-ring and tap the bushings back into the housing. Newer ones, use a home-made hook to snag the rings out. Part number is 301824, a special size o-ring.