Neil's link says HDPE, so you would need an HDPE glue, standard epoxies will not stick well to it.The last time I noticed (not recently) the ones that inexpensive calk came in were like Pillsbury canisters, rolled cardboard with a glossy or foil outer layer, and a metal end cap crimped on. So carefully scoring and stripping the outer layer in key areas to take glue wouldn't be so hard. Getting the metal end past the RSO might be harder.