This is how i pack my Divesoft Liberty Sidemount rebreather. The entire thing fits inside a pelican air case (without cylinders). the canister, loop, lung, head, tools, and even my bailout regulator. The entire box only weights 22kg or 48lbs which is perfect for airlines! I've even put inine valves in there if i've needed to travel with valves. Divesoft also has a travel card to put in so TSA knows what they are looking at. I've personally used something like this for the past 13 years so that TSA knows it's a rebreather used for scuba diving and it's life support.
![](https://i.ytimg.com/vi/jI6bA_ukZQM/maxresdefault.jpg)