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Model #5203

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Store SO SKU #1004324386

3 oz. White 5200 Marine Adhesive Polyurethane Sealant

Includes 12 tubes ($1.28 /tube)
  • Available in both cartridge and sausage packs
  • Meets many application needs
  • Durable, flexible bonding and sealing
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Product Overview

3M Marine Adhesive Sealant 5200 is a one-component, high-strength, moisture-curing, gap-filling polyurethane for permanent bonding of wood, gelcoat and fiberglass. It cures to form a firm, rubbery, waterproof seal on joints and boat hardware, above and below the waterline. This product has been trusted throughout the marine industry for over 50 years.

Additional Resources

From the Manufacturer

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Individual size (oz.)3


Color/FinishWhiteCoverage (linear ft.)120
Cure Time (hours)120Dry Color FamilyWhite
Dry to touch (min.)2880FeaturesMoisture Resistant
KitNoLongevity0 years
Number of Tubes Included12Professional Paint Supplies & ValuesPro Supplies
Returnable90-DaySealant FormSqueeze Tube
Sealant TypePolyurethaneTransparencySolid

Warranty / Certifications

Certifications and ListingsASTM CompliantManufacturer WarrantySee Warranty PDF

Questions & Answers

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Customer Reviews

  • 4.5
    out of 16 reviews
  • 88%recommend this product
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Showing 1-10 of 16 reviews
many apps
ive used on boats for years,dont recomend this its true,1 ton van had a flat tire a split in the side wall ,no spare ,no jack ,no wrench, worth a try and had time ,put 5200 on hole let dry for a few days put second glob on let dry few days,put about half psi in tire after a day still holding.drove to tire shop for new tire ,guys at shop asked what is that stuff.
    • Recommended
    Very poor.
    Tried it on my bilge pump. Wasted my money. Won't happen again.
      Great sealant for pond and submersible pumps
      I sealed the gaskets between thick epdm liner and skimmer and overflow unit of my pond with 5200, perfecto ! Additionally, I sealed the internal and external gasket of a (supposedly) submersible pumpS that let introduce small amount of water into it (and destroyed the motor after some time). 5200 (you need to be patient) is the best adhesive tested, regarding other glues. And because it has some flexibility, it's better than epoxy in case of vibrations. And the seal is kept OK even in the winter (Quebec = -30 celsius), embedded in strong ice.
        • Recommended
        Literally the best sealant
        I've used 5200 for a number of applications, the most critical of which was for the installation of two large brass port hole windows on a house. This was in an area that is bordered by the ocean on one side and the bay on the other. The windows were mounted with 21 lag bolts and flashed/sealed with 5200. Created an absolutely water and wind proof seal as well as adding some additional structural strength. Yes, it's pricey but it's also necessary when dealing with critical installations.
          • Recommended
          No-brainer for inflatable boat repair
          Tried this after reading some great reviews in various dingy forums re: transom repairs, specifically reattaching the PVC flooring where it meets the transom. PVC giue won’t stick to wood, but hypalon glue will, yadda yadda yadda. Tried it, didn’t work like previous PVC repairs. Enter the 5200. Not only did it stick the PVC fabric to the wood but it held like iron, and I have enjoyed many many hours in a boat that was destined for the nearest dumpster box.
            • Recommended
            Repaired vinyl pool liner
            In spite of the fact that the specs do not indicate its use for vinyl, I used this two years ago to apply a large patch/repair to my vinyl pool liner. The hole in the liner that was originally cut to accommodate the water supply/return from the pump had become significantly stretched to the point the original seals were not effective. I wanted to apply new material to both sides of the liner and I needed a bonding agent that was not a "fast setting". Using flexible, heavy gauge vinyl I cut and applied patches to both sides of the liner using generous amounts of 5200 on both sides. I allowed two days for the sealant to set before cutting a new hole through the patch. It worked perfectly and has continued to hold for two years.
              • Recommended
              Great product
              Greatest thing since sliced bread ! Used this on boats maybe 30 yrs. Put a soapstone sink together with this product after 20 yrs still no leaks ! You may want to let people know that mineral spirits is good for spreading and clean up.
                • Recommended
                Poor result after one season
                I used 5200 to seal 3 glass prisms to their stainless steel frames and then to the deck two began to leak the first season the third leaked the second season. The solution was to dig out the sealer and use a different product, very disappointing.
                Response from AAD PASOct 9, 2017
                We're sorry to hear this and we'd like the opportunity to discuss it further and gather additional information. Please connect with our team at 877.666.2277 M-F 8am-4:30pm CT. Thank you for leaving your review and we look forward to your call.
                  Bonding wood to shiny metal surface
                  Bought this glue to bond wood to a shiny metal magnet. Worked like a charm. Just a dab will do it.
                    • Recommended
                    Strong and paintable
                    Used for the keel of my wooden/classic boat as the seam started to seperate and the guard was not able to secure to the boat. WOW - unreal how strong this bond is for wood.
                      • Recommended
                      Showing 1-10 of 16 reviews