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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.
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Below Water Line (yes/no):
Yes
BRAND:
3M
Material:
Polyurethane
Rate Of Cure:
Fast
Strength:
Strong
Type:
Adhesive
Usage:
Bonding
Questions & Answers about 3M 5200 Fast Cure Marine Sealant:
2013-04-09GERALD MCCLURE asked: will fast cure work for a crack between rivets on an aluminum boat ?
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2013-04-12ALBERT SANOWSKIS: You could never get the inside of the crack clean enough to get good adhesion. You could apply it to the outside of the hull over the seam if you cleaned the aluminum shiny bright with a scotch brite and soap detergent. 5200 cannot take sunlight so 4000UV would be better. Use masking tape for a clean line!
2013-04-12DAVID HORAN: Gerald,
5200 is amazingly sticky stuff and will remain flexible when cured. Make sure the area you apply it to is very clean, no paint or dirt. Let it fully cure before launching the boat.
Good luck!
Dave
2013-04-12THOMAS CANGELOSI: Yes
2013-04-12PHILIP PURCELL: Wish I could help. I used the fast seal to secure and seal bulkheads on a wood strip kayak I built. Worked great for that application.
2013-04-12BRIAN RISINGER: Yes it will work great. I would get the boat out of the water first. Have some one back up the bottom of the boat and tap the rivets on the inside first to make sure they are tight. Clean the area where you want to seal with sand paper and solvent. Once dry apply the fast cure 5200. Buy what you think you will need. Once you open the tube no matter how well you seal it up it will harden!!!! This is because the 5200 is cured with air and WATER (even moisture in the air!!!) I use it on all of my under water connections on by glass boat, great stuff...
2013-04-17CHARLES FREEMAN: I have never tried it, but in general nothing sticks well to aluminum. By its nature it always develops an oxide coating that nothing, not even paint, adheres to. It is specially prepared by anodize tin just to paint it.
Yu are best off finding a welder. Aluminum cracks weld up nicely.
2012-07-01A shopper asked: Can 3M 5200 be applied to a wet surface below the water line? I've used the 3M 5200 adhesive frequently, but never required an adhesive that could actually be applied to a wet surface below the water line in the boat.
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2012-07-10ALBERT SANOWSKIS: GO TO 3m.COM AND SEARCH FOR THE 3M Marine Adhesive/Sealant Fast Cure 5200 data sheet. I doubt it because the hydrocarbon vehicle has to gas off in order for the long chain polymers to link. Why don't you just create a test tank and try it!
2012-07-10CHUCK PITT: No both surfaces must be dry. Once sealant is cured than it is good for under the water line.
2012-07-11MATTHEW D'AMICO: I would pull the boat out of the water first. I used it behind my transducer and the product is amazingly strong. I wouldn't take the chance of applying it to a wet surface.
Matt
2012-06-22FRED GRUENEBAUM asked: need to attach plexiglas to metal....will this work?
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2012-06-22CURTIS CHAMBERS: I would be concerned as to it's strength as an adhesive as it is not an adhesive to my knowledge. I believe it would work to seal it as it has held a seal around the gel coat and brass fitting for my application several years and many hours below water line.
2012-06-22ALEXANDER HOLDEN: That should work. Use the Fast Cure 5200. If you want a more "permanent" bond, sand the contact on both with a course paper.
2012-06-22JOHN RUSSO: I'm not sure I used it to attach a piece of starboard to my boat, works great its still attached after 3 years.
2012-06-23NICHOLAS HARPENAU: I would rough up the plexiglass and metal to create a rough surface to ensure a good bond. Make sure both areas are clean and dry. Allow 3M to setup and dry. You should be good. Thus stuff bonds well to anything it comes in contact.
2012-06-24JOHN HEIGHWAY: Hey Fred,
the question is too sketchy for me. It is a very tough sealant - almost as tough as the slow cure type. I think it will bond to each material, but I cannot estimate the mechanical strength.
2012-04-16JIM SWEMBA asked: Is 3M 5200 Fast Cure adhesive sealant paintable?
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2012-04-16MARC ORMAN: It probably depends on the type of paint.
I painted it with varnish and it stuck to it.
You may want to contact 3M to be sure it is compatible with the paint you want to use.
2012-04-17CLINTON WALKER: Sorry, I did not paint!
2012-04-18MATTHEW D'AMICO: Yes it is. Paintable and a great waterproof, fast drying sealer
2012-04-18THOMAS CANGELOSI: yes I have painted it before,no problem
2012-04-04ALAN PEASE asked: will this product hold up and bond to an aluminum boat below the waterline?
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2012-04-04MIKE WILSON: Alan- I have never used 5200 on an aluminum boat, I usually use it to bond hardware and thru-hull fittings on fiberglass and wood. If you are going to use it to seal and bond something that will also be fastened mechanically as well, it will seal and hold very well. If you are using it simply as a glue I'm not sure how strong the bond will be. If you do use it be sure to etch or scratch the surface.
2012-04-04NICHOLAS HARPENAU: From my experience...yes. This stuff holds to everything; just make sure surface is clean and free of oils.
2012-04-05CURTIS CHAMBERS: Have not used the product on aluminum hull. However, in '09 I applied it to re-inforce the seal around a brass fitting, the aluminum screws which attached the fitting to the hull and the gel coat around the fitting and the hull below water line. It bonded well to all and is still performing well after 400 plus hours.
2012-04-05DAVID HORAN: Alan,
I used 5200 both fast cure and regular cure for 20 years keeping a wooden planked 30' Chris Craft Cruiser dry. 5200 is very sticky stuff. I would give it a try. Just make sure the area you are using it on is free of paint,clean and dry. Good Luck.
2012-04-05LEE WATSON: The best sealant ive ever used and is still holing up since 2009,
2012-02-03JAMES SMITH asked: Is this a "neutral cure" sealant? Thanks
+Expand Answers
2012-02-04ALVIN SHAW: the 5200 cures to a white color,used on my aluminum boat to seal up joints in 2009 ,still holding up well.
2011-10-18A shopper asked: Is this product good for going over rivets on my 1976 Starcraft Boat. It will be used in Saltwater?
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2011-10-18NICHOLAS HARPENAU: This stuff is tuff and durrable. I am sure it will hold up to salt water and do an excellant job covering rivets if applied thick enough. This stuff is intended for water.
2011-10-21LEE WATSON: I didnt use it in salt water so i dont know how well it will work.But for fresh water it is the best product ive seen.
2011-10-23GLENN SAWYER: Yes, you can use this product below the water line, it is made to be used for a permanent fixture adhesive sealent,follow instructions and have a clean surface for proper adhesian
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
(1 of 1 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.
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