The phrase "window seals" refers to the rubber or plastic strips that are attached to the edges of windows to prevent air, water, or noise from entering or leaving. They help keep the windows insulated and secure. Full definition
If your vehicle is a convertible, it could be due to the roof seal or rear window seal being faulty as well. (yourmechanic.com)
The only problem I found during my time with the car is that the front driver's side door had a bad window seal which was making a lot of wind noise. (autoweek.com)
I also don't like the rear window seals, which could easily be pulled off so that the window can be removed. (articles.orlandosentinel.com)