I have a big blue water filter I'm having a hard time sealing. It has 1" NPT metal and I've got pipe with 1" MPT, also metal. I think the filter is low quality, I'm not finding any brand name on it. There's a large gap between both threads (not tapered) and before I go and buy another filter housing I wanted to see if there's a better way of doing it. So far I've looked into:
P.S. T Plus 2 works well in all other threads I have used it for, both metal and non-metal.
- Rectorseal T Plus 2: leaked horribly.
- PTFE tape. I have to wrap 10+ times for it to start fitting a bit better: a tiny bit better than T Plus 2.
- PTFE tape plus Rectorseal T Plus 2: leaked quite a bit.
- PTFE tape plus Rectorseal No 5: a bit worse than T Plus 2.
- Cotton wicking, PTFE tape, T Plus 2: small leak
- X-Pando: tiny leak, but I think it cracked when I was putting the filter housing back on
- Hercules Block: "Safe for potable water" but not NSF 61 compliant which is required in my county.
P.S. T Plus 2 works well in all other threads I have used it for, both metal and non-metal.
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