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I don't understand how the o-ring in hose fitting prevents leaks to outside
On NPT fittings, the threads seal themselves, thats why you use teflon tape/pipe dope to seal any slight imperfections in the casting. On to hose fittings, these have an o-ring, and I am told the threads do not seal with each other, thus teflon tape is useless and thus the reason for an o-ring. However, I do not understand how the o-ring stops the leaking from the top of the brass fitting. I understand it stops water from going past the oring on the male hose adapter, but I do not understand how the o-ring stops the leak between the female brass fitting and the male hose end. Is it because the brass fitting has a bit of a lip that seals with the hose threads? Wouldn't then SOME teflon help? submitted by /u/Successful_Cable_812 [link] [comments]
On NPT fittings, the threads seal themselves, thats why you use teflon tape/pipe dope to seal any slight imperfections in the casting.
On to hose fittings, these have an o-ring, and I am told the threads do not seal with each other, thus teflon tape is useless and thus the reason for an o-ring. However, I do not understand how the o-ring stops the leaking from the top of the brass fitting. I understand it stops water from going past the oring on the male hose adapter, but I do not understand how the o-ring stops the leak between the female brass fitting and the male hose end. Is it because the brass fitting has a bit of a lip that seals with the hose threads? Wouldn't then SOME teflon help?
[link] [comments]