66 Mustang Windshield and Rear glass install

[rhurley]

I am installing my glass in the car. All i have read says that you have to use a caulk style sealant.



I am curious, as this is a race/street car that will never see rain. Is the sealant keeping the window in? or it is just there for water tightness.

here is the only video i can find.


https://www.youtube.com/watch?v=oWdSSa1Mzhs