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โ Seal your legacy with 3Mโs toughest marine adhesive โ donโt let your boat settle for less!
3M 05205 Marine Adhesive Sealant 5200 is a black polyurethane formula engineered for permanent, flexible, and waterproof bonds on marine substrates like wood, fiberglass, and metal. It withstands saltwater and weathering, cures fully in 4 days, and maintains strength under vibration and shock, making it the go-to sealant for professional-grade marine repairs and installations.



| ASIN | B000Y89JC8 |
| Best Sellers Rank | #71,286 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #166 in Silicone Sealers |
| Brand | 3M |
| Brand Name | 3M |
| Color | Black |
| Compatible Material | Fiberglass, Wood |
| Customer Reviews | 4.6 out of 5 stars 1,613 Reviews |
| Global Trade Identification Number | 00051135052051 |
| Included Components | marine sealant |
| Item Dimensions | 36 x 124 x 224 millimeters |
| Item Form | Liquid |
| Item Type Name | marine sealant |
| Item Weight | 4.8 Ounces |
| Item dimensions L x W x H | 36 x 124 x 224 millimeters |
| Item weight | 4.8 Ounces |
| Manufacturer | 3M |
| Material | Polyurethane |
| Material Type | Polyurethane |
| Model | 5200 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 051135052051 |
| Style | 5200 |
| Style Name | 5200 |
| Surface Recommendation | Floor, Wall |
| UPC | 051135052051 |
| Unit Count | 3 Milliliters |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |
S**R
Excellent
Delivered on time, well packaged. Used on the boat transom to fill in transducer screw holes. It's easy to use. It does take a week to fully cure but works perfectly. I recommend for anyone working on a boat. Use a caulk tube plug to seal and save unused product.
D**N
long set time- unmatched flexibility and toughness
I actually use this to seal up busted drysuit seams. It's thick, but pliable, and takes forever to set, but in that time it seeps into the neoprene pores and fills anything from problematic pinholes to blowouts. stuffs tough and flexible, just a pain to use because of the cure time. worth it though
J**L
Buena calidad
Tarda en curar pero cuando lo hace queda bien aderido
W**E
Good product for under water use.
Used this for mounting a transducer plate on the transom of my 14โ boat.
C**Y
New
Great product
Trustpilot
2 weeks ago
2 days ago