Technical Sealing a bubble top glass?

Finishing up a 61 Olds Super 88 hardtop. New windshield, original rear one, new gaskets for both. Installed, but having a hell of a time trying to get it to stop leaking! I can stuff some strip caulk between gasket and pinchweld, but what (besides that nasty butyl glue) can I use between gl*** and gasket. I don't want to use butyl, in case I have to take them out, usually it ruins the gasket when they're glued up. I remember another type of sealer, in a squeeze tube we used to use, but my body shop supply has nothing like that. Anyone else have this problem?

 

There is a sealant made for rubber gasketed windows. I know O'reilly's did carry it. I think it was called bedding compound. It doesn't get hard like the butyl, but stays semi soft.

 

^^ and messy but it works.

 

back in the day you could get good gaskets that didn't need sealer.

 

Permatex has a product that should work. I've used it and have been very happy with it.

https://www.permatex.com/products/a...ex-flowable-silicone-windshield-gl***-sealer/

 

I've always used butyl compund in a tube and run a bead where the gl*** seats in the rubber and around the area where the rubber seats against the body. Yes it's messy however it remains pliabale and provides a nice water and dust proof seal. I used old rags with kerosine to wipe excess butyl off after gl*** was correctly seated in rubber and body. Once this was done wipe over again with kerosine and then water to remove the residual sealer before cleaning up. I've never had a screen leak and even if it does, run a small bead of butyl with a thin nozzle between the rubber and gl*** or body.

 

I hate to think you need to start over and take the gl*** out, but I'm thinking if there is water in the channel of the rubber, you're never going to get it to properly seal. ?

 

It ****s but I had to run windshield urethane with the gaskets on my 62 catalina in order to not have leaks. I think Steele Rubber recommends it. First 62 I just installed gasket and to a shower in the rain.

 

Every old windshield I ever took out had that Bedding compound in it. A pliable caulk that was kind of gritty feeling. It never got hard.

 

81730 Permatex flowable windshield sealer..... works great!! It is clear, just fold the weatherstrip back a little and squeeze it in, moving as you go.

 

Lexall will stick even if it's wet.You can get it at Ace Hardware. It's clear. Good luck!

Edit: I've never used it on your application (a windsheild) but one of the giys mentioned it may be wet under the seal and it made me think of Lexall.)

 

Chopolds, when I worked at Buick I used to use 3M BEDDING AND GLAZING COMPOUND. I don't remember the part number but a good body shop supply company should carry it. It seals but always remains pliable and soft and wipes off painted surfaces easy. Used it on a lot of window channels. Hope this helps.

Denny

 

Yep, that's what I used too. Couldn't remember the full name of it.