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⚓ Seal your adventure with the pro’s choice—unbreakable, waterproof, and built to last!
3M Marine Adhesive Sealant 5200 is a professional-grade, flexible polyurethane sealant designed for permanent bonding and waterproof sealing on boats, RVs, and watercraft. It bonds strongly to fiberglass, wood, and metal, cures fully in 5-7 days, and withstands harsh marine environments including saltwater, vibration, and temperature extremes. Trusted by professionals for over 50 years, it offers unmatched durability above and below the waterline.



| ASIN | B0000AY6AO |
| Best Sellers Rank | #780 in Automotive ( See Top 100 in Automotive ) #33 in Body Repair & Restoration Adhesives |
| Brand Name | 3M |
| Color | White |
| Compatible Material | Fiberglass, Wood |
| Customer Reviews | 4.5 4.5 out of 5 stars (10,466) |
| Included Components | ADHESIVE SEALANT |
| Item Dimensions | 2 x 5 x 9 inches |
| Item Form | Paste |
| Item Type Name | 3M Marine Adhesive Sealant 5200 (05203) – Permanent Bonding and Sealing for Boats and RVs – White – 3 Ounces |
| Item Weight | 0.14 Kilograms |
| Manufacturer | 3M |
| Material Type | Plastic |
| Model | 5203 |
| Number of Items | 1 |
| Part Number | 051135052037 |
| Style Name | 5200 |
| Unit Count | 3.0 Fluid Ounces |
| Water Resistance Level | Waterproof |
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