Windshield seam sealer? What to use.

3M Urethane works well, but without removing the glass and cleaning the old stuff, the results will be questionable, as others said. Have the trim close by as well, it should be put on before it cures.

https://www.amazon.com/dp/B000FW61EW/?tag=fabo03-20

This may snowball into a full restoration. :rolleyes: