I have a hydration bladder with a screw on the drinking hose, and the problem is that given enough time it will come unscrewed and then leak inside my backpack.
I have tried tightening it as hard as I dare, (everything is made of plastic) and it still eventually comes loose.
I could live with a permanent solution, since its fairly uncommon to have to remove the hose, and yet I would prefer something that can be undone if possible.
How can I keep the hose on my hydration bladder from unscrewing?