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British Pipe Threads on Myson Radiator sealing
After three failed attempts with Rectorseal and Blue Monster Tape, I am now seking a better alternative to sealing my Myson radiators located on the second floor of my new build. It sickens me to find these un-tapered threads so hard to seal. I spoke to the USA tech person at Myson and he suggested a few things, most which I have tried. Obviously, sealing parallel non tapered threads can be challenging.
I lasted 4 months since my last attempt before the dripping started after the radiators cooled from their last heating cycle. I have been looking into hydraulic BPT thread sealing devices (retained with a flange nut trapping the seal against the radiator and a sealing nut with o-ring (looks like one is available from China on eBay. I'm planning to start an evaluation once all pieces are in hand. I read this response from a previously closed post:
We now use a couple wraps of heavy teflon (be careful to keep it back from the end of the threads) and then a light smear of LeakLock sealant. We haven't had a leak in the last three years using these particular products and methods. I wouldn't worry about it.
I'm going to explore this LeakSeal product, but think my new approach of installing a sealing device may prove as a better solution. Any suggestions are welcome.