3M Dynatron Auto Seam Sealer Caulk, 550, Grey Color, Permanently Elastic, Fast-Skinning, Non-Staining, Non-Sagging, 12 oz

My husband bought this for his floor pans he welded in! Good value for the money, good quality, not sticky, smooth, looks good, and great sealability! He was pleased!

USED IN RESTORATION WORK ON CLASSIC CAR, REMOVED OLD SEALER FROM WELD AND BOLT TOGETHER SEAMS ON FENDERS AND TRUNK WITH SCRAPPER AND WIRE BRUSHING. WENT ON SMOOTHLY AND FILLED SEAMS USING HAND CALKING GUN, NO PROBLEMS. NO LEAKS TO WORRY ABOUT FOR DECADES TO COME. 3M HAS A GREAT TRACK RECORD YOU CAN TRUST.

Used this to seal some weld seams on my truck that were leaking. Applies with good consistency, dries pretty quick and can be painted to match if you wish. Does the job well!

Ok

It is a high-quality sealant. it remains flexible and dries well. It flows easily from the cartridge and is workable. The excess peels are easily too.

Seems like good value for the money. I was applying to the underside of my car so it was important that it didn't run, which it didn't. Was very easy to work with. Stuck to the car without sticking to my glove too much while applying.

Strong hold, does have a strong odor when applied, clears up when dried.

Does what it’s supposed to, used wax and grease remover with an acid brush to spread the beads after applying the product. This was used primarily to seal up exterior panel seams of panels that were welded in on my restoration project. Works best if you can use the whole tube in one go, if not the store in a ziploc bag.