Casey-
Litharge and glycerin were the constituents of what was a predecessor to
2-part epoxy. Properly mixed and applied, the combination cured to become a
very good and durable adhesive and filler. Among its uses, it was apparently
also used in the past by plumbers and steamfitters.
A non-locomotive application for litharge and glycerin that you can still see
because it has lasted many generations was as a filler to surround
wrought-iron railing posts set into holes in concrete or other masonry: the
material has a long life!
Ernie Wortmann
SE PA
