Rednadnerb wrote:
Sorry I can't provide a picture but it is as John describes. Brass with a
flat sealing face but the outlet is slightly D shaped and maybe the
sealing face is no longer flat. I think someone clamped it with a pliers
(not me honest). Maybe the sealing face is no longer flat. I have tried
it with a new hose and washer.

Am I right in thinking that if the thread is not part of the seal then my
ptfe tape hasn't actually been doing anything?


If it has a flat face, then no, the threads dont have a sealing function.
A new hose and washer should work unless theres something else wrong that
you havent told us. PTFE tape on the threads may allow you to do the
fitting up a bit tighter and compress the washer more but the the seal is
made by the washer.

Tim

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Please don't feed the trolls