On Thursday, June 10, 2021 at 7:08:53 PM UTC+1, John Rumm wrote:
On 10/06/2021 12:07, Dave Plowman (News) wrote:
In article ,
Fredxx wrote:
On 10/06/2021 00:23, Dave Plowman (News) wrote:
In article ,
Fredxx wrote:
On 09/06/2021 08:37, fred wrote:
Anyone wrap olives in ptfe ?

No, it shouts of amateur.

Oddly, it was a pro I got the tip from. Long before newsnet.


I prefer to use any other lubricant if it is
necessary. Petroleum jelly if potable.

It's not acting as a lubricant. More of a sealer.

You've contradicted this statement below?

PTFE should be confined to threads IMHO.

The threads pay no part in sealing a compression fitting.

I meant threaded fittings and not compression fittings, such as taper
threads etc.

The question was about PTFE on an olive? Using it there helps the seal
between the ends of the threaded part that the olive bears on. It might
reduce friction too - but then I always tighten compression fittings till
they groan. ;-)
One of the times that ptfe on the thread of a compression fitting helps
- you are able to work much quieter without all the squeaking and
groaning :-)

(also good for restricted spaces which need short spanners, you can get
better tightening)
--
Cheers,

John.

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So we are all agreed on this then ?
I had not heard of it until recently. We use a pressure pump and water tank to move water around the garden. The pressure tank seal failed so the whole caboodle had to be removed from its little house behind the garage, which involved breaking all the various connections. A real PITA and given that access is restricted once it had been reinstalled I was concerned to ensure all connections were water tight (plumbing is not my forte) so googled which was better ptfe or Boss White plus hemp and came across a discussion about ptfe and olives.
Anyway I tried it on a few connections and all connections were perfect when reinstalled.
I think after reading this thread I will wrap olives in ptfe in future as a belt and braces answer.
Thanks to all who responded