Brian D wrote:

SNIP

Do a search on the web for resorcinol,
sold under the brand name of GluVit (among others),

SNIP

Gluvit is a filled epoxy.

Resorcinol is a two-part adhesive which, while quite waterproof, is a bit of a
pain to work with. It demands tight fits, high clamping pressure and moderate
temperature. It is dark red in color and its glue lines will be visible.