Alright, stupid question time…. I’m doing the cowl area on my ‘60 ElCo and need a source for that gray sticky play dough goo they used everywhere on old GM stuff. It’s different than seam sealer and the tar they used. It stays pliable so that things can come apart later. It’s under trim, filling gaps, everywhere. I need it for dash trim and kick panel vents now, everything else later. What is that stuff? What’s an easy source? I don’t wanna spend the whole day wading through random forums reading Vette guys arguing, so I thought I’d just ask y’all.
A buddy I reached out to is calling it Dum Dum Putty, and saying it isn’t as sticky as the butyl so it comes apart easier when you need to service stuff.
The 3 M is not like we had in the factory back in 64. 3 m changed their Chalk a few years back. This is not the same now. Ours came form Mortel. Best ever stuff.
Yup, Dum Dum. It’s not that great at sealing and will harden, crack and shrink with enough time. I know I fixed a lot of water leaks because of that stuff under warranty.
OK, you said easy: https://www.homedepot.com/p/M-D-Bui...le-Caulking-Cord-Weatherstrip-71548/100353483 $6.27, four in stock in Missoula.
I’m the late 90s at the Chevy dealer I worked at we used 3M strip caulk. Worked just as well as the old stuff. You needed it to seal up any GM acc/heater box under the dash.
Have always used Duct Seal. Does everything you specified.....play dough like, stays pliable, reusable and gray. 8 bucks for a 1 lb. stick on Amazon. Electric line departments have used it for years.
I bought this last year. Very typical dum dum material. Used it to attach the plastic vapor barrier inside a door behind the door panel in a OT vehicle.
The 3M strip caulk is black, but it's good stuff and it doesn't get hard. It's available at most auto parts stores.