In article ,
The Natural Philosopher wrote:
Yes, very much so. The pipes do not 'waist' like copper ones do. A smear
of favourite goo will help, and possibly copper rather tha brass olives
if you can find them - far more malleable.

FWIW, I'm impressed with the 'new' Fernox jointing compound - it's a sort
of silicone. I replaced a load of TRVs recently where I had to remove the
old (different) olives and use new, so the pipe was anything but pristine.
And not a single leak.

--
*Why are a wise man and a wise guy opposites?

Dave Plowman London SW 12
RIP Acorn