Brass tap fittings sealing

[mdnorth]

Hello I have been fitting a mixer shower behind our bathroom wall. It has 4 1/2" tap female connectors for the hot and cold inlets and the shower head and hand held show. I bought 1/2" male fittings with a 15mm compression head on the other sides for all 4. I installed the male to female with PTFE tape and all was well for about an hour and now I have a very slight weep on both inlets. Am I correct in using PTFE tape for these fittings, or do I need a non hardening sealabt, or is there something else more suitable ? Many thanks

 

[Newboy]

I'prefer to use Loctite 55 but PTFE tape will do the job as long as you have enough of it and it's applied correctly

 

[leakydave]

Loctite 55... never let me down...


...yet.

 

[mdnorth]

Thanks I've ordered some loctite 55 already never had any issue with ptfe before just struggling this time seems fine then weeps cheers

 

[Madrab]

I find gas PTFE does the job handsomely, it's a bit thicker so allows a bit more flexibility with amount used and still seals ok.

 

[mdnorth]

Yes I'd assumed ptfe was the same thickness but it's clearly not