I need to seal brass BSP parallel threads - what sealant should I use?

[Peter]

I have to make some thread seals on brass BSP parallel threads that have no flange, o-ring or fibre washer seal in the design.

There seems to be quite a range of thread sealants available. My application is in the outlet of a shower valve leading to a wall elbow which requires that I have to seal four thread fixings. Can anyone suggest the optimal sealant / technique?

[shaun]

Don't know about the optimal but I just had a success with plumbers hemp and boss white on a threaded joint that PTFE wouldn't seal.

[pacer]

hi, the best way to seal these threads are PTFE tape. apply tape in clockwise direction, about 8 to 10 wraps round threads, will give you good seal

-- pacer

[david lang]

Loctite Threadlock Blue or

[Badger]

[Badger]

Loctite 511

[Jim]

Fernox LSX. Any plumbing shop.

jim

[mike ring]

"Jim" wrote in news:1129756948.429788.63910 @g44g2000cwa.googlegroups.com:

I just *love* that stuff; I've used it for 2 years on DHW cylinder, rad tails, remaking compression joints on tricky stubs of necked pipe, never a weep, only takes seconds.

And it's proved to be idiot proof!

mike

[Jim]

Totally agree and anyone still using PTFE is wasting their time when they could and should be using LSX.

jim

[Peter]

...and Badger wrote ... ?

[Andy Dingley]

Not on a parallel thread it won't. PTFE needs some compression.

[Mike Dodd]

I've used "Atmos Threadseal", bought in on a late Sunday afternoon panic attack in Homebase (why do I always try plumbing on a Sunday?)

Claims to be good for both water and gas.

Mike