I have a small leak on the tail connection on the hot tap on my bath (a drip every two minutes or so) It is a pain to get access to, even with a basin wrench. I have tightened it up as much as I can with little success. I suspect that there is a rubber seal in the connection that may not be sealing properly. However as it is impossible to get the old seal out without major plumbing work, would wrapping PTFE tape around the joint seal it
Many Thanks
Many Thanks