Chosen Solution

The right cup - - the whole assembly - - on mine cleanly broke from the headband. The headband ends in a metal piece that looks like an inverted U. The speaker cup has a small metal square where the headband was attached. What should I use to attach them back together? Epoxy? Glue? Any particular type better than another? It looks like it was glued (epoxied?) together before but the bond broke. Thanks!

I give this Gorilla epoxy a shot: https://www.youtube.com/watch?v=LA82R-bs