The last rubber set I did was a Chevy II and I'm pretty sure I used 3M Part No. 08509 Bedding and Glazing. I was able to get the caulking tube tip between the glass and rubber to seal that area also. It seemed to be real close in viscosity to the old days. I used the same tube for the pinchweld side of the gasket first, so don't cut your tip too big. TJohnhe oil can (we always called it a Plews Gun) was way handier and faster. I don't know if they even still make those, much less the different sealants in a can that were used with them. I'm starting to feel old now.