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Reviewer
Reviewed in the United States on March 16, 2025
10.5 oz Marine Adhesive Sealant 5200 - High Bond Marine Sealant (White), Underwater Caulking Fast Curing, Flexible Joint Sealant for Boats, Hulls, Decks, and RVs - 1 PackI picked up this marine sealant to fix a few leaks on my boat, and I've been pretty happy with it. It's definitely a quality product, and it seems to hold up well to the elements.One thing I appreciate is that it cures relatively quickly, but still gives you enough time to work with it. It's not too hard to apply, though you'll want to make sure you're using a decent caulking gun. The 10.5oz tubes fit standard caulking guns just fine, and there's a neat little metal tab on the bottom that you remove before using it, which keeps it sealed up nicely.I went with the white version, which is good if you think you might need to remove whatever you're sealing in the future. They also make a black version, but it's not as good as the white. Keep that in mind. This is a good all-around sealant for general marine repairs. It's a bit pricier than regular caulk, but it's worth it for the quality and durability.A heads-up about the nozzle: don't try to use too small of a hole, or it'll be tough to get the sealant out. I found that tightening the nozzle after each use helped prevent any issues. Keep an eye on the price; it seems to fluctuate a bit. And check the expiration date when it arrives, just to make sure it's not too old.Overall, it's a solid marine sealant that gets the job done.
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