3M Bare-Metal Seam Sealer - Beige, 08310, 200 mL, 6 per case

I chose this because it was tan 8310. Also first time user and had to remove the heavy body epoxy. It "kicked" or set in 4 minutes and bonded to tape. I panicked so started over with a little slower material to set. Extremely tacky, cannot sand or trim at all. Some areas super soft 24 hours later and other areas hard. So soft in one spot I scrapped off and laid new. Certainly some user error but very very unforgiving and even the 8310 that says you've got 6 minutes is closer to 4-5. Temps were 75 and humidity was 40. Go watch the 3M videos on YouTube. Really good schooling. I called tech support a week ago and put in endless loop of recording

I build Broncos and 3m claims this product is flexible and doesn't crack but I'm having problems with it cracking if a joint flexes even the slightest little bit. I've had to redo several jobs now. I loved the product before that. It's still good for places that have zero flexibility.