INFO: Rear Window Seal for Fastback

I've ordered two fast back rear window seals for my 72 from Dearborn. Neither fit, both seem like formal roof seals despite having the correct part number and all. Seem way too small and we don't think there is anyway they'd stretch over the window. Anyone else experience this?

I remember someone on here having similar problems with dearborn and rear window seals,  I dont recall who it was or what the outcome was exactly.

yes headliner has to be installed before the back glass cas the fabric of the headliner gets glued to the window opening flange and wraps around to the outside of that lip that the gasket sloand the gasket itself helps hold the headliner in place.
there is a new member who had a headliner installed and they didn't remove the glass to install it and simply glued it along that back edge and the heat melts the glue and the headliner starts to sag cause the headliner is not wrapped around that lip and then having the gasket over it to help keep it from coming loose.

Ask Eliteman76 aka Andy he installed his own headliner after hs 72 GTS
was painted and he said he will never do another cause it is such a PIA to stretch it and get it all tight with no loose or sags.

I din't want you to install the back glass if you have no headliner or plan on replacing it with a new one.
They also tuck under the edges of the roof channel that holds the roof channel gasket. I found this out when I was removing the driprail moldings on my 72 GTS and noticed the headliner material under the
roof channel after i took it off to get to the driprail screws

I had the same problem. The first one was way too small. They finally got me the correct one. Took about a month of calling and talking to guy named Levi.

Ron-

As a glass installer let me say that we used to use the soapy water to rope in rubber seal windows but it dries & cakes. Nowadays we use WD-40. Slips in like magic.

Don't use urathane with the rubber gasket. It'll work for awhile then separate. Use "liquid butyl". That's what we call it anyway. It's a sealer made for what you are doing that stays soft. Should be able to get it at glass shops or auto body suppliers.

the best stuff to use is a 3M bedding compound used for rubber gasket window intallation. It is better then the 3M window weld as it does not sag like window weld which is more of a liquid

3M Auto Bedding and Glazing Compound part #08509



Edited by 73 ProStreetTorino - 18-July-2011 at 9:11AM

Looks to be a formal roof seal as it don't look big enough for the fastback rear glass. I think the part numbers are mixed up and if you were to order a formal roof you might get the sport fastback gasket but I would call and see if they can put a hands on and open the box and check before sending it

Edited by 73 ProStreetTorino - 26-July-2011 at 6:30AM

Ron, sorry to see you are having crap for luck with Dearborn.

Well if they won't physically go out in the wharehouse open the box and check before sending it they won't correct the problem if the part numbers are wrong. So call and see if they can check both seals and send you which ever one is bigger

Edited by 73 ProStreetTorino - 26-July-2011 at 6:33AM

What other colors? I thought all rear window gaskets are black rubber on every year 72-76

Edited by 73 ProStreetTorino - 26-July-2011 at 6:26AM

Whifty's correct. Originally mine had a tan interior and a tan window seal. The new ones are all black though.

Mine was tan on both sides. The molding does cover most of it on the outside so it wasn't very noticeable.

They are color keyed on both sides. I had to scrub mine thoroughly to get them to show their colors, but they did and looked pretty good. In retrospect, they probably had to do that in order to get the "finished" look on the inside, as the design made it show against the headliner. Guess I will be carefully removing mine from the '76 unless I decide to change colors.