I have a small portion of weatherstripping around my car's rear window that is loose and for the past few years I've had to push it back it whenever I open and then close the door (no water has ever gotten in through this even if I didn't push it back in). I've finally decided to get around to doing something about it and came across some 3M weatherstripping adhesive in Walmart. A small tube costs $2.47, but I don't think I would even use one tenth of what is available in the tube before it goes bad and ends up in the landfill, but I have some already bought and paid for Gorilla Glue on hand. Should I just stick with the Gorilla Glue or go with the specialty stuff?
The good news is, rubber around front and rear windshields pretty much never is there for anything other than cosmetic purposes, and doesn't hold water out in any way.
Exception is rubber-installed rear glass. That rubber does hold the water out, but it also holds the glass IN. And is a rare thing these days, unless you're talking heavier trucks.
I've had to reinstall the rubber strip at the bottom of Ford Fusions probably 100 times. It's notorious for coming off.
I use 3M Plastic and Emblem Adhesive rather than the 3M Super Weatherstrip adhesive. I find that it works better, even though theoretically the weatherstrip adhesive is designed just for this purpose.
The Plastic and Emblem adhesive is also clear, whereas the other stuff comes in black or yellow.
Just be sure you clean both surfaces with some sort of solvent first.