None of the joints designed for gas or beer should require PTFE. What have you got that you think needs tape? Any metal-on-metal connectors (usually internal regulator connections that you won't see) should close up on a nylon washer. The keg posts should tighten up against an o-ring. The 1/4" screw connectors on the keg disconnects are a compression fitting and don't need PTFE. Everything else should be John Guest push-fit.So I have had my kegging bits all ready to go for over a month, and not been brave enough to assemble it all. Taping the joints with gas rated PTFE is making me a bit nervous, and I'm not sure how to sanitise all the lines before connection - do you sanitise the gas lines and disconnects as well?
Anna
You don't need to sanitise gas lines.
Disconnects, lines and taps are cleaned by pushing PBW from a keg through them with a bit of CO2 then rinsed the same way with water and sanitised before use the same way with Starsan.