In article ,
G.W. Walker wrote:
I've happily used PTFE on olives in the past as well,
but I can see how it might not create a perfect seal.
Unlikely a sealing compound, PTFE isn't liquid, and so
there's a chance that as you tighten the joint, the
PTFE will rip and you'll end up with PTFE around most
of the olive, but with a gap somewhere that could allow
a small leak.

So no different from a paste, etc? That will also rub off from high spots.

--
*I speak fluent patriarchy but it's not my mother tongue

Dave Plowman London SW
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