Most people that tape the joints use standard PVC insulating tape but use this instead
Amalgamating Tape
It stretches & tries to return to it's original state is waterproof & seamless Does not leave any residue when removed & the same piece can be used more than a few times, just cut about 8-12" from the reel (10m x 19mm) & wind tightly around the ferrule with slight over lap. Clockwise or anticlockwise depending if you are left or right handed caster
https://www.amazon.co.uk/Black-Self-Amalgamating-Waterproofing-Connections/dp/B000KH9UHM
Can't fish with confidence without taping the joints first.
Probably nonsense but works for me.
Hoolet
I no longer bother taping joints. I uses two 6 piece Guideline NT8 salmon rods, stick them together on Monday morning, then pull them to bits with ease 2 weeks later. I check them first thing every morning, but they never move. Most modern rods are like that, and none of my friends tape joints.