Windshield sealer

[Joyridin]

I had a new windshield installed a few weeks ago. The gasket was pretty new, but not brand new (Maybe a year old). It leaks between the windshield and the gasket, not the gasket and the body.

Anybody know of a silicone or some other sealer I can buy to seal it up? I used tire sealer last time and it worked well. I thought there might be something different that might work better.

Thanks!