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Old 14th Feb 2018, 9:46 am   #52
Sinewave
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Join Date: May 2016
Location: Oxfordshire/Bucks borders, UK.
Posts: 1,604
Default Re: Compressor purchase

Use regular ptfe tape. The taper thread acts as a way to physically lock the thread, but this isn't enough to seal it. Parallel threads use flats to land against to lock the thread as it tightens. You would still use ptfe tape on a parallel thread.

Loctite 577 is a good example of a thread sealant and thread locker for parallel threads with no mating faces to lock. You can still use ptfe but would need more.
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