Hello,

Have a Union that leaks a very small amount on the incoming water line to
the house.

Really a small amount, a few drops if someone takes a long shower.

Maybe I shouldn't call it a Union, as it is not the kind of coupling with a
spherical seat and no gasket.

This one has flat mating internal surfaces with a gasket between them. I
saw this when the water company man put in the new pressure reducer a while
back.

Anyway, I can certainly live with a few drops, but it is annoying.
I reallyt don't want to call a Plumber in just for this.

I was thinking about hydraulic cement.
Would a very thin smear of this stuff where it is leaking on the outside do
any good ?

Or,... ?

Thanks,
Bob