[2-Pack] Black Polyurethane Seam Sealer Automotive Compound Kit - Durable & Flexible Auto Body Filler - Seam & Joint Compound for Bare, Primed or Painted Surfaces - Automotive Seam Sealer [Black]

Worked well for me. I did a repair on a boxed frame and wanted to keep water out. I applied and spread over all the welded seams. LOOKS GOOD!

This goes on much smoother than the other suppliers product. Doubtful the color has much to do with it, but many of the others I’ve used was white. This black sealer is able to be used with a manual caulk gun. The others are so tuff I had to break out the Milwaukee 18v battery caulk gun. Very good stuff. Plan to buy again when needed.

Easy to apply, take it very easy when sanding as the instructions say. I’d use a finer grit as it burns through very easy with the recommended grit. Definitely sealed my weld, dried a little longer than stated but cured in its entirety within 24 hours. It’s not filling large holes in one coat as I had a few small holes I burned through when welding, no bigger than a 2-3mm or about 1/8in and it filled about half of them with one coat. All in all, great value for what you’re getting considering how pricey seam sealers can get.

Good stuff. Strong odor though. Open doors and windows.

Great!

Filled nicely. Holding up well after a month on my undercarriage

Used where I'd been using marine sealant before, but didn't require the same kind of immersion resistance. Was a bit easier to apply and less messy. Created a good seal and laid down a good bead. No complaints other than it's a bit pricey.

If you can wait it's less expensive then the box stores. Product works very well.