I turned off the feed valve on a toilet to replace the flapper. When I
turned it back on again it started leaking.
I tightened the cap (or whatever it is properly called) a bit. It would
only go about turn about 5 degrees; but that was enough to stop the leak.
Will it remain non-leaking as long as I don't use it again, or must I
replace it now? I expect I will have to replace it the next time, as there
is no more tightening possible, but would just as soon put it off if it
should be stable.