I'm not a professional plumber or installer but have done a bit over the years ... in the past, in order to assemble parallel brass threads I would (rightly or wrongly) have either used PTFE or hemp and paste to seal the two components fittings and tightened the fitting to the correct orientation if required .... but I bought a Reliance 312 22mm 'drop tight' pressure reducing gauge and it came with a (separate, unattached) pressure gauge (with a rear mounted brass thread) and there was no fibre washer or rubber O ring with it (and in any case when you screw the gauge on to the fitting the gap remaining between the two mating surfaces is way too much to accommodate a washer or O ring ... it's about 3mm).
Strangely they do give you a plastic blanking off plug (two in fact) to block the unused port/s and that does have a correctly fitting O ring therefore the problem doesn't arise, you just screw it on and tighten.
Is Loctite 55 the modern way? Or am I just overthinking and should simply use one of the methods I've used in the past as detailed above?
Ta.
Strangely they do give you a plastic blanking off plug (two in fact) to block the unused port/s and that does have a correctly fitting O ring therefore the problem doesn't arise, you just screw it on and tighten.
Is Loctite 55 the modern way? Or am I just overthinking and should simply use one of the methods I've used in the past as detailed above?
Ta.
