3M Auto Bedding and Glazing Compound, 08509, 1/10 gal Cartridge

did great the job needed

1960's fords, maybe other manufacturers, used a rubber gasket with this bedding compound to seal against leaks. This 3m product is non hardening and can be cleaned off with mineral spirits without hurting your paint. If your initial installation still leaves leaks, you can peel back the rubber and squeeze more in (both inside and out). As a final measure you fill in the Crack where the stainless meets the body. Clean up with mineral spirits.

This is the gooiest stuff you can possibly imagine.It's what one might use to train hazmat staff on contamination containment.Any contact transfers the goo to something else, which then transfers to something else, all the while spinning off fine black strings like melted cheese out of some dark nightmare.It forces you to think ahead about clean up procedures and supplies.Keep away from fabrics, headliner, anything that can't be cleaned up with solvents.After a couple weeks out of the tube, it seems to firm up to "tacky".A "firmer" choice straight out-of-the-tube might be Sikaflex 220+, which I have also used.

This is good for gasket-style glass installation. It is liquid butyl and will NOT set or harden beyond maybe "tacky" and that is after a few months. I believe the reason is older gasket-style glass floats in the frame. The sealant isn't supposed to harden as it allows the glass to float freely in the frame to absorb vibration while also able to seal against water penetration around the gasket. To seal the glass INSIDE the gasket use a polyurethane sealant. That WILL harden but since it is a glass-to-rubber mating it doesn't matter.

I use this mainly under rubber gaskets on auto glass. The gaskets seal out the water. This stuff has the property of not drying out, so temperature changes won't affect the sealing.It can be removed with mineral spirits which is a rather good thing since it is messy to apply. It will get everywhere. You can get it on yourself by just looking at.It may be a little stiff in the tube on cold days. Heating the tube to 110-120 F in an electric oven will improve the flow. Be careful around open flames (read this as a gas oven) try not to set your oven on fire.All in all a good sealing product. It is black in color.

About halfway through the job the back of the tube gave way inside my caulk gun, ruining the gun and making me have to scoop the rest out of the bottom with a popsicle stick. It was a total mess and I’m out a perfectly good gun. Otherwise the product was exactly what I needed. I guess I can’t blame the seller either. It was just a very crappy experience.

used this stuff under the "bead lock" type of auto glass rubber, as a extra measure of protection against leaks.....chevy's never leak and rust out the window channel.... :(a lot of rust repair, sanding, 3 layers of por 15, then this gunk before the window seal...never will leak again for many moons...be careful, this stuff is messy, uses glovesdoens't really harden, just stays "icky" and sticky

Redid all the weatherstripping ony 84 corvette. All the retainers were bent around the windshield. Some research said instead of attempting to find the 3M double-sided tape, that this could be used in its place with the fasteners to give a tight seal. Happy to report it's been a few months and no leaks