Car doors seals have three types of installation methods. They can be either glue-on, press-on, or clip-on. A glue-on door sill plate works using car adhesive. Like any other adhesive used in automobiles, you heat it and place it carefully in the groove on the inner side of the car door. If it’s a press-on seal, they will snap into place if you push the seal into the groove. This type only comes in certain models of cars, and they are not very common these days. The downside of press on seals is that they come off easily with a gentle tug. Clip-on window seals are more common today. They have clips that attach directly to the door.