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Your cart is empty.Excellent for Applications Above and Below the Water Line. 3M Marine Adhesive Sealant Fast Cure 4200FC chemically reacts with moisture, delivering flexible bonds with good adhesion to wood, fiberglass, gelcoat, plastics and metals. This multi-purpose adhesive bonds dissimilar materials, forming a watertight, weather-resistant seal on joints and boat hardware above and below the waterline. The flexibility of 3M Marine Adhesive Sealant Fast Cure 4200FC allows for joint movement and stress caused by shock, vibration, swelling or shrinking. Permanently elastic, this medium strength sealant adheres to a wide variety of substrates and allows for disassembly of parts after prolonged use. Available in cartridge and sausage packs to meet your application needs. Recommended Applications: Fiberglass deck to hull; Wood to fiberglass; Portholes; Deck fittings; Rubrail attachment; Sealing screwholes; Stanchion supports. Designed to Endure Marine Environments - 3M Marine Adhesive Sealant Fast Cure 4200FC is a part of our broad range of adhesive sealants uniquely formulated for the marine market. Designed for reliable performance, 3M Marine Adhesive Sealant Fast Cure 4200FC provides the strength and flexibility that can meet the demands of many tough applications. Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements. These sealants excel in challenging industrial, transportation and construction applications. Polyurethane sealants are available in a wide variety of Shore A hardness, open time and colors to meet many application needs. Choose a 3M Manual or Pneumatic Applicator for dispensing 3M adhesives sealant cartridges and 400ml/600ml sausage packs. In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.
ASH
Reviewed in the United States on February 19, 2025
This sealant is excellent. Cure time gives plenty of work time while fast enough to get back on the water quickly. Being in a tube makes easy to dispense and spread. It stands up to weather and vibration great. The adhesion is great and has held strong not had a single drop of water get by. Cleanup is easy if you do it right away. Great value in sealants.
Traveler
Reviewed in the United States on January 21, 2025
I have used this product before and it is great. One thing that drives me crazy is when you order these and they are over 18 months past the expiration date, the one I got was well within that, so I was happy. I use the 4200 if I think I may have to remove the item in the future, if I never want it to come lose I use the 5200.
Customer
Reviewed in the United States on August 21, 2024
Any 3M product I've use including this is great. Amazons pricing and availability not so much. Large price swings every few days / weeks and same day, next day, 2 day and next week options come up randomly. I'm sure as always they have an explanation as to why that the lawyers have written. Not to mention the tubes that came in envelopes were dented beyond use and a missing applicator tip on one. But when delivered dent free for 22 bucks its great.
Brandon A
Reviewed in the United States on May 2, 2024
4200 is some great stuff. Nice because it's not permanent but still seals great. The bottom of the 10oz tube has a metal opener on it. Basically, it looks like the top of a grease gun. They do this to provide a better seal on the bottom of the tube so the product doesn't get ruined while sitting. Remove the tab and the bottom has a plunger for a standard caulking gun application. I wanted to put this here because I was confused by the seal, so hope it will help others.
Don
Reviewed in the United States on November 6, 2024
As advertised
ImIn
Reviewed in the United States on November 14, 2024
yep, I have not used it because I ordered it as a mistaken. Anyway, I took it out and inspected it anyway. Packing is great, in a big card box with lot of insulation. The tube itself has no damage. Inside the tube, looking at the bottom is clean, no imperfect there (I usually see little dent and caulk/silicone weep out at this area)
Leonardo
Reviewed in Mexico on March 14, 2023
Desde que conozco esta marca es la que uso. Quizá parezca cara pero es muy eficaz.
Clifford Peek
Reviewed in the United States on October 17, 2023
This product is very popular among boaters as it has been tested and proven over the years.Before ordering, you should be aware that 3M makes this, the 4200, as a sealant that can eventually be removed if needed. They also make 5200 which is intended to bond permanently, as in prepare to be destructive if you need to undo the bond.So, with that said, think of 4200 as a super high quality marine version of bathroom caulk/adhesive sealant. With that in mind, use it for all leaks and repairs with the knowledge that if you ever have to "undo" anything, you can. And keep the 5200 in mind when you really, really, really want to bond something for life.4200 is obviously more expensive than traditional bathroom caulks, but you are paying for 3M's years of testing and research, as well as years of testing in the field by boaters around the world. This product has a great, well-earned reputation as a no-nonsense sealant. I bought a tube to fix a leak on the flybridge of my boat, and of course once applied, my leak is no more. Just be sure to clean the area well, with acetone, before applying (as you should with any sealant).
Francois Turcotte
Reviewed in Canada on July 9, 2021
Decription say 5200 but picture show a tube of 4200.Not the same product as 5200 is for permanent bounding and 4200 is for semi permanent bounding.The tube received was 4200. Did the job well anyway.
Karen
Reviewed in Canada on November 13, 2020
Great product ! Easy to apply. Used it to repair a fibreglass trailer. Results were better than expected. Easily sanded off the excess adhesive.
Snowboard Dave
Reviewed in the United States on January 18, 2020
I read most of the reviews on the 3M Fast Cure 4200 Sealant and was a little warry but after using the product, I am very pleased. Yes, it is not an easy flow product out of the included nozzle but it has to be designed that way or you would have material all over the place. I suggest as others have, do not try to have to small of a hole in the nozzle because it is difficult when using a smaller hole. I kept tightening the nozzle after each hole I filled on my boat and had no problems with it. The product skinned over quickly and cured totally within 24 hours. I suggest everyone, read the directions so they are not trying to use the product for an application it was not designed for. Great product and will use again if the need arises. Wish there was one size smaller because once it is opened, in 24 hours, it can no longer be used. I was filling small screw holes where I removed snap grommets in the floor of my boat and wanted to protect the area the screws had created. Sealed great and permanent till I want to pull it out or put screws back in.
Michael Kilday
Reviewed in Mexico on August 12, 2019
Gusto
Mr A. S.
Reviewed in France on February 26, 2019
excellent produit technique et de qualité.J'ai collé des ailerons de stabilisation sur des kayaks en plastique.La durée de la colle dans le tube après ouverture est de quelques jours et non de quelques heures comme indiqué
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