I had my hesitation about using this but it was recommenced by a friend. My Miata (1997) soft tops glass window separated at the bottom driver side. Water was getting in and I wanted to seal it. After purchasing this I made a little line around the open section and let it dry for 24 hours. After opening and closing the top several times it separated again. YIKES! After a little research I decided I didn't put enough. A small strip was not going to cut it. After cleaning the opening, peeling the old seal, and this silicon seal, I filled the opening all in the seal and pinched it together with two strong magnets (2 sets). Waited 24 hours and ran with that. It has been a while now, Texas HEAT, and lately Texas downfall of rain and it still has not separated. I have opened the top maybe 20 times and i'm still good. Happy with this product for the purpose that I used it for.