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loctite 55 as thread sealant

Discuss loctite 55 as thread sealant in the Plumbing Jobs | The Job-board area at PlumbersForums.net

very good also 577
 
Use it and the tape for different applications, used the liquid 577 then known simply as threadlock on metal threads but the joints must be clean and oil free for it to cure.
 
Always been straight ptfe but often wondered about the loctite. Any one say why it might be better than ptfe on some application ? Thanks. Wc1
 
WC1 said:
Always been straight ptfe but often wondered about the loctite. Any one say why it might be better than ptfe on some application ? Thanks. Wc1
Click to expand...

I have found it to be more reliable than PTFE on radiator tails especially and also more reliable on fittings in the sizes above 3/4". I'm not sure why it works better but it does in my experience!
 
rpm said:
:D too busy to give a full answer, no worries stigster did it for you :D
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Don't know what other I could of add other than try some
 
Great, I'll give it a go. If I'm gonna try something that could cause a leak in a customers house, I need to know why I should try it. Thanks :D
 
I use Flomasta Pipe Thread Sealant from Screwfix on outside taps to wallplate elbow connections. It's the next best thing to welding it on, it's that strong. Using this on the threads eliminates the need to line up the wall plate elbow with the tap using a wrench as it can be turned to whatever angle you want and left for an hour to set. It won't move again and is fully watertight. When replacing outside taps, I usually replace the wall plate elbow as well so the fact that the tap can't be removed isn't a problem. To use it, I coat the threads of the tap with a zig zag line all the way round with the Flomasta and apply a ring inside the wall plate elbow. Screw both of them together to whatever angle you require, wipe off the excess and sit both on a kitchen towel for an hour. It won't come apart again.
 
After having used loctite 55 , I must report that this product gives the impression of a perfect sealing.
The tip is that you must cross - crossing the tape on the thread.
I ended up on the loctite 55 after having failures with the use of ptfe. Especially when I used ptfe on short adds on (photo below) or parts with short thread.
I noticed that loctite 55 offers a better solution .

ScreenClip.png
 
64degrees said:
Ain’t used PTFE for years - normally scratch up the thread a bit to give it a bit of adhesion, another vote for loctite 55!
Click to expand...

What do you mean by scratch up? As in like keying in with some wire wool/wet&dry/emery or something else? Have never used loctite 55 but think will give it a try after all the recommendations in this thread.
 
Pickwickpick said:
What do you mean by scratch up? As in like keying in with some wire wool/wet&dry/emery or something else? Have never used loctite 55 but think will give it a try after all the recommendations in this thread.
Click to expand...

Cross cut a hatch pattern with a pair of grips or hacksaw blade
 
Got some 55 today, tiny little roll, I'll have to make sure I don't get it mixed up with my toothy floss!!
Also after spending decades generally preventing damage to threads, deliberately scratching up the thread is gonna take some getting used to. But overall looks good, thanks guys!!

20181210_180933.jpg
 
Use miles and miles of the stuff, brilliant on threads up to 2"1/2 but got to be carefully any bigger then that as it can run up the thread even when you have scored them.
 
Yes
 
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