On 16/05/2019 19:30, Roger Hayter wrote:
..

Or you can wind the PTFE tap on the threads progressively thicker near
the back of the fitting until the threads jam at the point you want them
to.

That's the theory.

PTFE of course is like a woman. Smooth to the touch and easily wrapped
around your fingers. But it will not actually do what you want it to do.


--
Adam