Hello, the seal of our exterior door regularly comes off as a whole. I then put it back in and it holds for a certain time. But that can't be the point. Can it be glued? And if so, with what?
I would only put a few dabs of silicone into the groove, that should be enough. Of course, you can also use other adhesives, e.g. [Soudal fix all flexi]. That always sticks everything and is tight. However, if you want to replace the seal later, it will be difficult to remove.