wnissen
Contributor
Respectfully, o-rings are inexpensive, easily counterfeited life-support equipment. If it is off-spec (too thin, too small, too soft) and extrudes at the wrong moment, your tank could be empty in about a minute. I would not try to save a few bucks by buying them from Amazon. They commingle all their stock, so you are almost certainly not getting product from the company (or individual) on the listing.Two purchases off of Amazon has found me with a bunch of o-rings that are garbage. By this I mean they don't work and my tank continues to leak. One set is hard as a rock and the other simply doesn't fit my yoke adaptor on my steel tanks. Looking for recommendations for good o-rings. TIA
I buy almost all my o-rings from McMaster-Carr O-Rings
I have an engineer and a technician I am close to, and this is where they get almost all their industrial supply. If it's good enough to go to space in a satellite, I would trust it on my tank.