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3M 5200 is a single part sealant that cures to form a firm, rubbery waterproof seal. When fully cured, this high strength marine adhesive remains flexible and suitable for use where shock, vibration, shrinking or swelling are concerns.
Use 5200 on wood, fiberglass, hardware, motors, on fiberglass transoms, seams, joints, between struts, and planking stern joints. This permanent adhesive bonds and seals: fiberglass deck to hull, wood to fiberglass, portholes and deck fittings, motors on fiberglass transoms, under moldings, hull seams above and below water line, centerboard trunk joints, between struts and planking, stern joints and more.
Apply with a manual caulking gun. Sealant remains workable with a trowel or spatula for up to four hours, and won't sag or flow in vertical or horizontal seams.
10 oz cartridge shown. Choose Color & Cartridge Size.
Consider using 5200 Fast Cure instead if the quickest possible cure rate is a consideration. It has slightly less tensile strength, but provides full cure in as little as 24 hours.
Reviews for 3M 5200 Marine Adhesive Sealant
March 24, 2023
Verified Purchase
I purchased this 3M product and a final attempt to secure a window into a metal frame. It was a particularly hard job because the metal frame was only 36 inches long and one inches wide and had to support a window which was 24" x 36" and 3/8 inch thick. The window weighs 40 pounds so it seems like an impossible task for a glue to hold into that frame. However, it was done from the manufacturer 30 years ago and finally let loose I tried several of the 3M products as well as other brands with no success. This product has done the job.
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February 12, 2023
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Excellent caulk.
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December 8, 2021
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Shipped a fine product right away. They were the only distrIbtor that had the color I wanted, tan.
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August 9, 2021
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It is an excellent marine caulking/adhesive
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December 10, 2020
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Rick, couldn't have been more patient and helpful with me. I really appreciate it! Dan
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April 23, 2020
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I'm rebuilding a boat, I use this to rebel bulkheads, stringers , floors etc. I also use it for through hull fittings.
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January 29, 2020
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Went on smooth gust make sure you uses all of it the first time the leftover we'll harden .
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December 9, 2019
Verified Purchase
Wow, happy with the product! Restoring a bottom on a 57 Chris Craft. Restorer assisting me wanted $70.00 more a case than originally quoted siting a price rise from his source. Jumped online and found Jamestown had the best price! Thanks!!
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September 16, 2019
Verified Purchase
3M 5200 is the best since Bearcat body deadener from 1949. Sticks to anything, is strong, cures without shrinkage, & it's DURABLE. Thank you 3M. Don't like to thank mega corporations, but this stuff is fantastic! Nuff said.
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June 17, 2019
Verified Purchase
Havent used it yet but will shortly to permanently mount some things like hatches.
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