Emergency pipe repair product help

[Atgni]

A friend had a pinhole leak on a heating pipe it was a very fine line shooting out about 1 foot and in a really awkward spot right on a T junction.
I tried to do a temp repair with some quite old self amalgamating tape but the leak kept finding its way out of the wrapping, I dont know if it was because it was old tape or not working well under the constant stream of water.

I have done a quick google and there are a lot of options available that say they can fix, like 2 part putty, self amalgamating tape, butyl rubber tape but which one or two should I get in readiness for a future leak to fix until a proper plumber can come do a repair.
Thank You

 

[Tricky-Dicky]

Hi, perhaps keep one of these in stock -

https://www.screwfix.com/p/flomasta-brass-compression-pipe-repair-fitting-15mm/85529
Helped me out once - mains cold water feed in attic, restricted access, etc

PS, self amalgamating tape will not work on a pipe that has mains water pressure!

 

[Atgni]

Hi, perhaps keep one of these in stock -

https://www.screwfix.com/p/flomasta-brass-compression-pipe-repair-fitting-15mm/85529
Helped me out once - mains cold water feed in attic, restricted access, etc

PS, self amalgamating tape will not work on a pipe that has mains water pressure!

Yes that looks useful for a permanent repair.
I am looking for something that will stop the leak on a temporary basis - get me by until tomorrow sort of thing or until I can then source a plumber to do it properly.
I saw some self amalgamating tape that says water proof but I suppose that still needs putting on when it is not actually wet and leaking

 

[Fred Blogs]

Self amalgamating tape wont do it. It's meant to keep water out of a joint, something like rain and it doesn't do that particularly well, neither will any of the other gunky things at mains pressure unless they go off almost immediately. You need to use something like Tricky Dicky's suggestion.

 

[Atgni]

Self amalgamating tape wont do it. It's meant to keep water out of a joint, something like rain and it doesn't do that particularly well, neither will any of the other gunky things at mains pressure unless they go off almost immediately. You need to use something like Tricky Dicky's suggestion.

Thanks - I now have a photo. if you look carefully you can see a very fine line from X marks the spot

 

[Atgni]

They say the plumber is going to try and find the part but it looks custom made to me with the sensor soldered on. The system is 20-26 years old.

 

[fixitflav]

They say the plumber is going to try and find the part but it looks custom made to me with the sensor soldered on. The system is 20-26 years old.

It might be possible to drain the part down, clean the area till bright, flux it, warm it (carefully!) and apply solder. I did a rad with a very small leak that way about 50 years ago and it's still OK.