Have used this before on an immersion heater and got a perfect seal first time.
Just used it again to seal a quite damaged thread on a mains pressure shower valve - again first time success, despite it not sealing properly with ptfe tape.
Really recommend this stuff for difficult to seal threads.
Amazingly it's difficult stuff to find in most traditional plumbers merchants, or even the sheds.
Its far too new to be adopted over ptfe tape. If they stopped selling PTFE tape, what would numpties use on the threads of compression fittings? It always raises a smile when I see a compression coupler or trv with 'socks' of ptfe tape sticking out.
Dave
Thanks chaps, I shall invest the required £3! Sounds good.
The PTFE reduces the friction coefficient at the threads. That gives you more pressure on the olive, for a given torque.
I'll definitely get some of that string.
That may be so, but as an amateur, more pressure is the least of my concerns. I stopped having trouble with compression fittings when I stopped using ptfe and used less torque.
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