Install with Dawn regular dish washing liquid. It seals.
I also rub the inside of tubless race tires down with it. Most use tubes because they always lose air. Try this it works. Rub it on , Mount them they won't leak again. My tires are on the shelf since my car was wrecked they are still aired up. I have been doing this since I was turned on to it for our sprint car. nitrogen is not free but is a must to hold diameter on a sprint car.
Dawn regular dish washing liquid makes installing the windows easy because it stays slick. and then it seals the rubber to the glass. do not use it on the pinch weld.
