22/06/2026
Don’t Do This!!
But why - all be it an innocent mistake this M22 fitting seal me mechanically on an oring and cone. It does not rely on the threads to make a water tight seal unlike a tapered thread would do.
PTFE on tapered threads is perfectly acceptable (not on fuel systems however) but on parallel threads PTFE tape is a No No.
As shown with the jet wash coupling this seals with a bonded seal on a parallel thread.
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