@chrisp Most of the rings on the post assembly are pretty simple, so I didn't include info about them here. I only included details on the ones that I had the most challenge with. Here we go...I hope you like pictures.
1182N115 was purchased as a 10-pack from McMasterCarr. These guys are incredible.
https://www.mcmaster.com/1182n115
The Flaretite Seal was purchased at a place called New-Line Hose and Fittings.
https://www.new-line.com/
Here's a picture of the two parts that were hard to find. The black rings are the originals and the numbers are what I used to replace them.
View attachment 645330
Here's the replacement for the 'bulkhead' o-ring. This ring forms the seal on the inside of the tank.
View attachment 645331
And here's what it looks like when in place.
View attachment 645332
The seal that goes inside gave me a really hard time. This is the one labelled as the "flaretite" seal.
This one is more of a semi-permanent installation. If you ever remove the assembly, you'd need to replace this part. This is because when it is tightened into place, I think it partially crushes to form the seal. That said, it seems to hold pressure well. That said, they're not cheap and kind of hard to find (for me anyway). They were $20 for a 4-pack.
View attachment 645333
Just to make things more simple (in theory anyway), for my second tank I'm still considering ditching the existing assembly and trying the set-up mentioned above and giving these a shot -->
https://www.ontariobeerkegs.com/Bal...quid_19_32_p/ball-lock-1-4in-liq-bulkhead.htm
Good luck and let us know how you eventually get yourself set-up. These tanks are great once you get them "up and running".
SB