W
Wood glue also works.I'm sad to say I've recently had a similar (shoddy craftsmanship?) with a different model of brand new Peterson recently.
I was going to ask if just some simple super (CA) glue would be appropriate to do my own repair....
On my pipe it was the ferrule came off just like that, you can see where the glue appeared to only be on a portion of the circumference between the two surfaces....................