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#47777
amuller
Participant

    Ideally, you would look for a fit maybe .002 tight, in which case, if things are clean and smooth, you probably don’t even need any sealant. Up to a couple thou loose, a higher strength anaerobic "thread locker" will work. Anything near or above that, a good quality epoxy like the mentioned MarineTex will work. (Using epoxy on engines, one has to bear in mind that many of them will soften at a fairly low temperature….)