Guys I am with Ob1quixote on this one,I am not a fan of silicone
for the same reasons he has stated. I fit glass for a living.
If you must use a sealant,try and get Glazing urethane instead.You can get it at a FLAPS (Autozone sell it)
Silicone is for sealing bathtubs and boats! wink

Lightholder is concerned about glass removal after using sealant.
Provided you do not prime the area with the glazing primer removal should be fairly straight forward.
The urethane will be more than strong enough to hold the glass in place without the primer,and without the potential rust/contamination issues.

Sorry to hear your vent cracked Tim (SW)...I've never liked the idea of laminated vent glass for that reason....... dang
Consider replacing it with a 5mm tempered glass.(I did this with my '50.No vents though!) grin
Any good glass shop should be able to get one made for you. It shouldn't be too expensive.

Last edited by jockbolter50; 03/02/2009 12:50 AM.
1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.