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3M 4200 Fast Cure is a one-part general purpose polyurethane sealant with fast curing and good adhesion to wood, fiberglass, gelcoat, plastic, and metal. When cured, 4200 forms weather-resistant, watertight seals on joints and boat hardware above or below the waterline. Designed to endure marine conditions, maintain joint movement, and absorb shock caused by swelling, shrinking, or shock. Ideal for sealing portholes, deck and hull fittings, screw holes, and other marine applications.
4200FC is easy to paint and sand after full cure. While 3M 5200 sealant results in permanent bonds, 4200 has approximately half the strength, making it a good choice for applications where the bond may need to be broken in the future such as replacing hardware.
Size displayed is 10 oz. cartridge. Choose white or black and either 3oz and 10 oz cartridge sizes.
Reviews for 3M 4200 Fast Cure Marine Sealant Adhesive
Verified Purchase
Purchased this product and after opening the cap it would not dispense properly, it appeared to be a very old tube or defective in some other way....bottom line, it was unusable.
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This product worked well for my application, installing a centerboard gasket on my Mutineer dinghy. It was highly recommended as this gasket will need to be replaced sometime in the future as it will wear over time and use. 3M 4200 is a great product for adhesion especially for an item that may need to be removed at a later date.
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use it for sealant on my boat
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So far so good
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this product was fresh
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Great product. I replaced a drain fitting that was leaking into my boat. No more leak! Thanks JD
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i use this 4200 for everything above the waterline,
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First, Jamestown has the best prince! I used this to adhere aluminum skin to the side of wooden trailer and it worked perfectly. I have no complaints for its performance, what so ever. The only thing you need to what is that once you open, there is not a easy way to keep remainder from hardening. The best thing to do is to plan ahead and use full tube all at once. There are a few more things I need to mount, so I will be ordering soon.
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These are great products and yes, if you allow it, they will get messy. When using these products: Choose the right product for the application! 5200 will yellow in the sun. Tape off area, give yourself room, make your lines straight. Put on gloves. Don't over fill, you will just have to wipe more off. Wipe the end of the tube with a paper towel when you pull it away Don't over tighten fasteners, you want to leave some adhesive between surfaces and finish tightening after cure. Wipe off excess, a little at a time to avoid smearing. Wipe down with Multi purpose cleaner or acetone for a clean smooth finish, remove tape after surface cures.
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This product was easy to apply and dries very quickly. The only problem we had was the shipping.
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