PTFE on an immersion heater ok?

[hingmy]

Just fitted a direct E7 cylinder and for the first time I have a weep from the top immersion. I have used the usual sealing ring but no PTFE or jointing compound. All the other fittings (inlet, outlet & DOC), I have wrapped the threads in PTFE. Any reason why I shouldnt PTFE the immersion thread ?

 

[danielp]

try using just jointing compound that should be enough! failing that a bit of hemp!

 

[justlead1]

Hi. Be mindful that the joint on an immersion heater is the flange on cylinder against the flange on heater, which are pulled tight together by the parallel treads, if you put to much resistance on the treads by using heap/tape etc, the joint will not form as designed too. You may well be able to unscrew it say half a turn and introduce ptfe in the gap, which will form a seal when tightened and allow ease on untightening in the future. Good Luck

 

[HTB]

LSX both side off the seal would be my preferred jointing material.

 

[newbie1]

had same thing on an immersion seal bugger just wouldnt stop weeping cant remember now what stopped it think it was ptfe and some paste as well

 

[Mike Jackson]

I always use a thin smear of jet blue or slic tite when I install immersions.

Mike

 

[Deleted member 2053]

Before you use anything that sets just remember that you might be the sucker that has to try and remove the thing again 7 years on. Usually the supplied seal is enough with a thin smear of lubricant as Mike suggested.

 

[migoplumber]

for what reason did they ban boss white, it was the mother of all seals!! did boss white ever kill any one.
shaun

 

[buffy27]

whats the craic.
if u want to cross thread it use ptfe
if u want to never open it again use hemp
if u want to do it right,use compound and a gasket.there s no debate on this one boys!

 

[Mike Jackson]

for what reason did they ban boss white, it was the mother of all seals!! did boss white ever kill any one.
shaun

It's not banned for non potable use. Being oil based it can't be used for potable applications.

Mike

 

[hingmy]

Cheers lads. Plenty of different suggestions there. I think caution is the watchword here as I'll probably be the one who has to replace it in a few years. So, a bit of jet blue smeared on the seal and a couple of wraps of PTFE in the gap just before the flanges come together. Its worked !!