How to quickly choose the type of pneumatic rotary joint

How to quickly choose the type of pneumatic rotary joint
Firstly, where is the pneumatic rotary joint used? Is it one-way or two-way? Is it low pressure or high pressure? Low speed or high speed? What is the maximum temperature that can be withstood? What is the medium of circulation? Is air, oxygen, hydrogen, etc. corrosive. Do we need to transmit current signals?
Secondly, where is the pneumatic rotary joint installed? What is the link size? What kind of connection method is it: threaded connection? Flange connection? Still…..

Thirdly, are there any special requirements, such as when using a certain type of rotary joints and encountering certain phenomena, what performance needs to be improved.