"Richard Savage" wrote in message ...

Problem: the junction between the Tee and the rad fitting weeps. I
have tried no PTFE, some and lots of PTFE to no avail. Currently
some of Mr Fernox's magic stuff is keeping the drips at bay, but ...

So, what have I done wrong?

Try a paste[*] and hemp joint.
[*] i.e. Boss White, etc.

--
Andy