Unless you are going to get PTFE under the olive - ie between the olive and the pipe, then I don't see why PTFE would help. I feel so many people think it is th esolution to everything - but without a proper side by side comparison of identical methods (with and without) then you don't know that it helped. PTFE is for threades joints - a compression uses the threads to compress the olive and are not part of the sealing process.
I always use ptfe tape and water pump grease. The joints come apart easily after 30 years usage.
You could just buy the active ingredient of old Nitromors:
At your own risk, read the MSDS, wear PPE, etc.
Theo
Capitol wrote in news: snipped-for-privacy@brightview.co.uk:
The grease is a good idea - except it could lead to overtightning due to friction being reduced. /Many diy plumbing problems are caused by siezed parts - a problem so easily avoided if things are lubricated slightly (with the proviso that you don't apply as much torque to tighten). Threads in taps are a prime candidate for a bit of grease.
I was going to say that too!
And, to tackle the hoary myth about PTFE on compression fittings, it is absolutely fine to put three turns or so on the male threaded portion. Not for sealing, but to reduce the friction (so that you get more axial load for a given amount of torque).
Try to avoid letting filaments go into the cones or across the olive, but *small* amounts even there will not matter: at the pressures generated in a compression fitting the PTFE will just extrude.
It helps because it lowers the friction coefficient. So for a given amount of torque, you get more axial force (which is what makes the olive seal). It doesn't make much difference on brass fittings, but it makes more on steel and chrome plated ones.
Indeed - I think the compression article says much the same:
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