5200 FC (Fast Cure) is a faster curing version of 3M's popular 5200 marine sealant. With nearly the same tensile strength as original 5200 and significantly faster cure time, Fast Cure is designed for use where permanent bonds are needed quickly.
Easy to apply with a standard caulking gun, this high performance polyurethane adhesive becomes tack free in one hour and fully cures in approximately 24 hours. The seal is extremely strong, retaining its strength above or below the water line. 5200 FC stays flexible and allows for structural movement. It has excellent resistance to weathering.
As many times as I have used it to seal seaplane floats I have never tried it underwater. If you decide to try, I would suggest using the fast curing compound. The results would be known a lot sooner and perhaps give an indication of how the 7 day cure would or could work.
Answered on 4/3/2016 by EUGENE RACKLE JR from undisclosed
A:
I never used underwater.
Answered on 4/3/2016 by PAUL HILLE from undisclosed
A:
I have been told you can, but have never tried personally.
Answered on 4/3/2016 by EDWARD JORDAN from undisclosed
Answered on 9/9/2015 by RICHARD PATTERSON from undisclosed
A:
I used it to bond a pvc (poly vinyl chloride) dingy skin and tube. An inflatable raft , in other words. The flexible portion came loose from the fiberglass hard bottom. This adhesive has held for 3 years. It also held the vinyl to the hard transom with some stainless screws added until the adhesive held. The only thing that it MIGHT NOT STICK TO IS POLYETHYLENE. I HAVE NOT FOUND ANY THING FOR THAT. 5200 is very good and worth a try. It was recommended by a professional boating mechanic for my pvc dingy. Very pleased. It does set up fair quicky. So read the instructions and believe them.
Answered on 9/11/2015 by MICHAEL MEADE from undisclosed
A:
Yep
Answered on 9/9/2015 by ROBERT ZWIERS from undisclosed
A:
I used it to bond a pvc (poly vinyl chloride) dingy skin and tube. An inflatable raft , in other words. The flexible portion came loose from the fiberglass hard bottom. This adhesive has held for 3 years. It also held the vinyl to the hard transom with some stainless screws added until the adhesive held. The only thing that it MIGHT NOT STICK TO IS POLYETHYLENE. I HAVE NOT FOUND ANY THING FOR THAT. 5200 is very good and worth a try. It was recommended by a professional boating mechanic for my pvc dingy. Very pleased. It does set up fair quicky. So read the instructions and believe them.
Answered on 9/11/2015 by MICHAEL MEADE from undisclosed
A:
I have never tried it.
Answered on 9/9/2015 by WILLIAM MITCHELL from undisclosed
Answered on 9/9/2015 by RICHARD PATTERSON from undisclosed
A:
yes , I have repaired diesel filter cannister leaks on a diesel engine while it was hot and running . simply by wiping of the leak area and applying before it started to weep diesel fuel again.
obviously a strongly flowing leak would need to be stopped so the 5200 can have a dry surface to adhere to.
James p. Scalise
Answered on 8/6/2015 by James P. Scalise from undisclosed
A:
I wish I could answer the question but that is not an application that I have ever tried. I can tell you that I used it to seal amphibious aircraft floats for over 27 years of professional flying and there is no better sealant on the market, both fast cure and standard cure 5200. There are products out there that are used to seal rubber bladder fuel tanks in aircraft but I would give 5200 a try first. We swear by it.
Answered on 8/5/2015 by EUGENE RACKLE JR from undisclosed
A:
I don't think so, I don't think it would stand up to the gasoline.
Answered on 8/5/2015 by EDWARD JORDAN from undisclosed
Q:
Can this product be used to seal around a line entering my swimming pool, it will be under water all the time? Thanks, Ed
Ed, I am not sure, You would need to investigate whether the 5200 can with stand the chemical of the pool environment. I have used water proof tape before for my pool, it has foam with aluminum covering.
Answered on 8/3/2015 by JOHN PATELLA from undisclosed
A:
This product is used to seal the hydrophone thru the hull of my boat. The boat is in the water docked for 3 to 5 months each summer and cruises about 35 miles an hour. If your pool goes faster than 35 Mph, maybe not...
Answered on 8/1/2015 by CARL LYONS from undisclosed
A:
It worked great for me. Had to drain inground pool to below the stairs. Then applied the 5200 sealant, let sit for a day and then filled pool back. No more leaks. Over two years now. Great product.
Regards, Mike
Answered on 8/2/2015 by MICHAEL REYNOLDS from undisclosed
A:
I have only used it to bond fiberglass panels to fiberglass or plastic. I believe it is good for bonding plastic or fiberglass to wood as well. I am not sure about it bonding to metal or cement. You might want to check on that with 3M.
Answered on 8/2/2015 by THOMAS SWEITZER from undisclosed
A:
yes 3M 5200 fast cure works below or above the water and will not loose it's adhesion properties or shrink
Answered on 8/1/2015 by JERRY SCIACCHITANO from undisclosed
A:
5200 is great for under water use. It's an amazingly strong adhesive so don't use it for anything that you will eventually want to separate
Answered on 8/1/2015 by MARC SALAVA from undisclosed
Just used this product to permanently install drain tubes on my center console, excellent.
Was this a gift?:
No
5/1/2012
(1 of 1 customers found this review helpful)
5.0
Excellent Product
By Waterdog
from Valdez, AK
About Me Advanced
Pros
Easy to Use
Protects Well
Visually Pleasing
Weather Proof
Cons
Messy
Best Uses
Quick Fix
Comments about 3M 5200 Fast Cure Marine Sealant:
This is a must have if you own a boat.
Was this a gift?:
No
8/22/2011
(1 of 10 customers found this review helpful)
1.0
M 5200 OK but not with rubber liners
By Ron
from TN
About Me Advanced
Pros
Easy to Use
Cons
Best Uses
Comments about 3M 5200 Fast Cure Marine Sealant:
I attempted to fasten heavy rubber liners in a pond that are damp if not wet. This product WILL NOT stick to anything wet or damp.
Was this a gift?:
No
6/10/2010
(5 of 5 customers found this review helpful)
4.0
Would use again
By Uncle Styke
from Elbow Lake, MN
About Me Casual/ Recreational
Pros
Easy to Use
Protects Well
Weather Proof
Cons
End cap hard to remove
Best Uses
Indoor
Outdoor
Wood Trim
Comments about 3M 5200 Fast Cure Marine Sealant:
I used this product to repair cracks, seams, and small depressions in a concrete fountain pool before repainting with epoxy paint. It spread beautifully and provided more than adequate tooling time with a standard putty knife. The product did not run or sag on vertical walls. It remained slightly tacky for several days and didn't fully cure for an entire week, but that may have been due to using it on concrete, which wasn't listed as one of its uses. I would recommend tooling as smoothly as possible since the product is not easily sanded, even with a power sander. Overall, I was very pleased with this product. Its bonding strength is phenomenal, yet it remains flexible enough to withstand joint movement.
Special order items are not stocked and are ordered direct from the manufacturer. They are non-returnable, may take 2-4 weeks, price and shipping charges subject to change.
Checkout: 
Item(s) in your cart:
The item was added to your wishlist.
