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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.
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This high performance polyurethane adhesive sealant from 3M becomes tack-free in 24-48 hours, and completely cures in 5-7 days with no shrinking. The seal is extremely strong, retaining its strength above or below the waterline. 5200 stays flexible and allows for structural movement.
Below Water Line (yes/no):
Yes
BRAND:
3M
Material:
Polyurethane
Rate Of Cure:
Slow
Strength:
Strong
Type:
Adhesive
Usage:
Bonding
Questions & Answers about 3M 5200 Marine Adhesive Sealant:
2013-05-18A shopper asked: I need to seal the seams and rivets of an old 1960's aluminum fishing boat. It is painted camo with matte spray paint. Will 3M 5200 work to seal it?
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2013-05-18JOE LANE: I dont know about metal. I used to restore old wood boat.
2013-05-18JOE LANE: I don't know about metal. I've only used on wood
2013-05-19COASTAL WOODWORKS: I can't say that 5200 will seal a painted surface because I have not used the product on anything but virgin surfaces. What I can tell you is that 5200 would be my choice to try. It has done every task I have asked of it so far. I even used it effectively to seal the ends of nylon rope handles in my home built kayak. I drilled out the ends of the handles to accept the 5/8" rope, coated the holes, and inserted the ends into the holes. Worked like a charm.
2013-05-19CRISTIAN RADU: Yes. And it will hold up well in a working boat, just clean up a little around the application to have a good adhesion surface.
2013-04-13A shopper asked: Does 3M Marine adhesive sealant 5200 need moisture to cure?
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2013-04-17LYNNE FRAKER: Does very poorly with moisture. Area must be dry or it won't stick.
2013-04-17JAMES SMITH: I have been restoring a 20' Chris-Craft wood boat for several years now. I am almost done. So far I have used 36 tubes of 3M 5200 on the boat. 3M 5200 doesn't cure hard like a wood glue. You will break the two pieces of wood trying to pry them apart after a period of time like a month, but 3M 5200 cures very slowly. It does not need water to cure and it feels like rubber after two days. After a month it is still plyable if you push on the adhesive that squeezed out. It it totally waterproof which is why it is used on marine applications.
Jim
2013-04-26JAMES WHITE: fast curing, one-part polyurethane that chemically reacts with moisture to deliver strong, flexible bonds
with excellent adhesion to wood and fiberglass. Forms watertight, weather-resistant seals on joints and
boat hardware above and below the waterline. In addition, its flexibility allows for dissipation of stress
caused by shock, vibration, swelling or shrinking.
2013-04-04A shopper asked: Will this adhere to gelcoat?
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2013-04-04KURT LENTS: Asolutely!
We use it to seal intake grates and pump shoes to the hulls of our waverunners.
Keep in mind it is very difficult to remove if need be.
2013-04-04ROBERT ENGELHARDT: Yes.
2013-04-04KELLY GRECO: Yes quite well
2013-04-05RICHARD GUANDALINI: I use it on my hull which is wood
Excellent results
2013-04-05JAMES CROMPTON: it will adhere to about anything.. make sure the surface is clean first
2013-04-06ALL BRIGGS: Yes, be sure to clean and rough up (200-400 grit sandpaper) the gelcoat first.
2013-04-01PAUL BAUMANN asked: will it cure while under water or wet?
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2013-04-07JAMES ZIMMER: I would not try it.
2013-04-10CARL STEEN: Polyurethane caulks are specified to cure under wet conditions. I do not know if this implies under submerged condition. My personal experience has been limited to dry conditions. I prefer 3M 5200 to seal through deck bolts and screws to prevent water leaks.
2013-04-26JAMES WHITE: fast curing, one-part polyurethane that chemically reacts with moisture to deliver strong, flexible bonds with excellent adhesion to wood and fiberglass. Forms watertight, weather-resistant seals on joints and boat hardware above and below the waterline. In addition, its flexibility allows for dissipation of stress
caused by shock, vibration, swelling or shrinking.
2013-03-25PAT WALKER asked: How does it do sealing rub rail to fiberglass hull?
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2013-03-27ALAN CLEELAND: As long as it is held in place to cure it will hold very well. Fully cured it will be rock solid in my experience.
2013-03-27KEVIN DONOHUE: If you use 5200 you should assume the part will never come off again. Since you may want to repair or replace parts of a rubrail 5200 might not be the best choice.
2013-03-29BART PORAN: You could use 5200, but I'd consider another product for a rub rail. 5200 is very aggressive, you'll never get the rail off again. This might sound good but in the event of impact damage you might want to remove it someday without damaging the boat. I installed an extruded aluminum rub rail on my 1973 Silverton restoration last fall using SIka 291 LOT and mechanical fasteners (screws). The LOT stands for "long open time". Bedded the rail and sealed each screw as it was installed. No leaks and very solid. Good Luck on your project.
2013-04-16STEVE LUSARDI: It's not a good sealer. It is VERY permanent! It is a flexible adhesive.
2013-03-21JOE KURONYA asked: Will this work with Moyor Homes as well?
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2013-03-22KEN ERBAN: I have no idea what Moyor Homes is
2013-03-22Joe Kuronya: sorry motor home
2013-03-23KEN ERBAN: 5200 is great for bonding and sealing just about anything. I would not use on anything you might want to remove
2013-03-23STEVE ARNONE: It works well where a very good water tight seal is required.
2013-03-27JACK ALLISON: I would think so, it's some sticky stuff.
2013-04-16STEVE LUSARDI: As a flexible adhesive, yes. Not as a sealant.
2013-03-15LEO KEANE asked: Still wondering if I have the best product for caulking the wood seams of a restored wooden boat. Is 3M 5200 the product for the job? The top deck is vertical grain Douglas fir, 3" planks, spaced with a V-groove only about 3/16" wide and maybe that deep. I have already finished the deck with Sikkens Marine Gloss. I will tape the seams, apply the caulk, tool it smooth, and finish with another coat or two of Marine Gloss. Anybody been here before?
+Expand Answers
2013-03-16MAC MCCASKIE: I don't believe you can add a finish to it. I will stick and remain flexible though.
2013-03-20RICHARD ROSSELLI: 5200 is a very aggressive adhesive as much as it is a caulk. You may be better off using a marine caulk like Boatlife if you think you may ever have to do a repair like replace a plank. With the 5200, it is so aggressive that dis-assembly is very difficult without destroying adjacent boards.
2013-03-20HERB DELOACH: DON"T use 5200 if you ever want to get it apart without tearing the wood up or using a router to cut it out.I use Boat life to bed the planks above the waterline and then on deck seams use Interlux Seam Compound.
2013-03-21MARK BIGDA: I would not use 5200 for that. It is way too aggressive and will be very hard to remove.
2013-03-05JOSEPH BOGGIONI asked: can this product be used to seal seams on a plastic shower surround?
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2013-03-07JACK CONLEE-DABDOUB: Yes absolutely.
2013-03-07JERRY KEYES: It can be used but it's overkill . A regular tube of silicon sealant will work just as well and cost much less. With the 3M you are paying for a product that does things you don't need for a shower surround.
2013-03-07JOHN S HALE: Yes.
It is great as an adhesive and as a filler for small openings.
It is rather messy; it is known as do-get-around but can be cleaned up with appropriate solvent...
2013-03-08ALAN HUDINA: Yes, but make sure you never want to remove it, this stuff holds like steel.
2013-02-11A shopper asked: Is 3M 5200 sealant paintable after full cure 5 to 7 days?
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2013-02-17DAVID HEINEMAN: I used the 5200 in all my joints (of plywood sailboat) I'm buiding over which Ithen embedded it in epoxy before finish paint job. So, I have no joints overwhich I only applied paint. Years later, I am still building it so can't fully answer your question as to its effectiveness. Hope to launch this year. W ish me luck!
2013-02-17DWIGHT HALES: I've not painted any of the 3M I've put on my project, but the adhesive does cure within 5 to 7 days.
2013-02-18JOHN BLASKO: It should be paintable once the little bit of solvents have 'flashed off ' (evaporated fully).
2013-03-21MARK BIGDA: Yes. Might want to prime first with something like Interlux 2000E.
2013-02-10A shopper asked: Can I paint over it?
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2013-02-15KEVIN DONOHUE: i really doubt it. This stuff is toxic waste, difficult to work with, it never dries hard and it is impossible to get off whatever you wear when you work with it. That said, 5200 is amazing as a caulk for things that move (like most stuff on boats.) But you should treat it like a angry snake -- use it carefully and only when you have to.
2013-02-16STEPHEN PRUEHER: I haven't tried to paint over it...........
2013-03-21MARK BIGDA: Yes you can paint over it. You may want yo use an epoxy primer like Interlux 2000E first.
2013-03-27JACK ALLISON: 5200? Yes you can. We did and it held up well.
Applied with a 1/4" bead then spread with a putty knife, this stuff didn't turn out to be nearly as messy as other reviews led me to believe. Maybe it's worse on fiber...Read complete review
Applied with a 1/4" bead then spread with a putty knife, this stuff didn't turn out to be nearly as messy as other reviews led me to believe. Maybe it's worse on fiberglass or a protected wood, but I applied to raw pine and it worked like a charm.
VS
Most Liked Negative Review
Good Product, Defective Packaging
We purchased this product for use around our swimming pool, and while satisfied with the product, the problem was with the packaging. The first tube of 3M-5200 was used without a hitch, ...Read complete review
We purchased this product for use around our swimming pool, and while satisfied with the product, the problem was with the packaging. The first tube of 3M-5200 was used without a hitch, but the second tube had a defective bottom which would not slide forward to allow the product to be advanced from the tube. After trying it in 3 caulking guns, we were forced to cut the bottom off the tube, creating a mess, and leaving us with no way to direct the application of the product. In frustration, we ultimately threw away the second tube. [...] I guess I'll try to make my future purchases locally, so there will be a chance to actually speak with someone when there's a problem.
If you are using 3M 5200 above the waterline with almost any material, and below the waterline with a metal that won't naturally introduce even a small amount of corrosion, then you've got a good product.
The problem is less with the adhesive itself than the materials glued and then kept submerged in seawater. Copper, for example, when under stress, won't stay stuck to the wood to which it has been glued. It seems that the copper slightly oxidizes, releasing the glue from the metal. 3M 5200 liberally applied did not appear to prevent this from happening.
I think the product is good, and I use it a lot, but for certain applications (as with most things) it won't work.
Was this a gift?:
No
4/3/2013
5.0
The end all, if you have time.
By Aquanot
from Seattle, wa
About Me Professional
Pros
Consistent Quality
Easy to Use
Protects Well
Visually Pleasing
Waterproo
Weather Proof
Cons
Long cure time
Messy
Really Long Cure Time
Best Uses
Comments about 3M 5200 Marine Adhesive Sealant:
Nothing that hasn't been said, takes all of six days to cure. You have to have time to take whatever it is out of service to allow proper bonding, helps to wet down the area after application.
Was this a gift?:
No
12/17/2012
5.0
5200 Sealant
By Hannibal1
from South Arkansas
About Me Advanced
Pros
Easy to Use
Cons
Best Uses
Outdoor
Comments about 3M 5200 Marine Adhesive Sealant:
Excellent weather proof adhesive
Was this a gift?:
No
11/18/2012
5.0
the best on market
By Jack
from belmont HN
About Me Beginner
Pros
Easy to Use
Protects Well
Visually Pleasing
Weather Proof
Cons
Messy
Best Uses
Indoor
Outdoor
Quick Fix
Wood Trim
Comments about 3M 5200 Marine Adhesive Sealant:
it is incredibly strong and color is good
Was this a gift?:
Yes
11/2/2012
5.0
Resealing deck hardware with 5200
By bjamessr1
from Portsmouth NH
About Me Advanced
Pros
Easy to Use
Protects Well
Visually Pleasing
Weather Proof
Cons
None
Best Uses
Indoor
Outdoor
Sealing And Weatherproof
Comments about 3M 5200 Marine Adhesive Sealant:
great caulk to reseal exterior mounted hardware and any penetration. Nice and flexible even after setting.
Was this a gift?:
No
9/24/2012
5.0
3M5200 as a covering -
By sterilecuckoo58
from Boston MA
About Me Advanced
Pros
Protects Well
Visually Pleasing
Weather Proof
Cons
Messy
Best Uses
Outdoor
Quick Fix
Roof Siding And Bathroom
Wood Trim
Comments about 3M 5200 Marine Adhesive Sealant:
It has performed well as a covering over cracked wood trim at mast step - heading survived 2 summers and 1 winter with some yellowing; appears to take Easypoxy top coat paint well. Regular cure - Used it as filler in a horizontal gap about 1/2 wide, 14" deep. It sagged but has not cracked or separated - its indoors in bathroom wet area. Fast cure is tougher to apply, more tenacious, but skins readily and sheds a storm in about 90 minutes. Seal unused portion in several plastic bags and remove are from bags. can keep using the tube for a couple weeks. Acetone cleans it up, but dont use acetone at repairs because then you get to do ... start all over again..
Was this a gift?:
No
7/3/2012
4.0
poor packaging
By giiwedin
from Lake Superior - upper peninsula
About Me Advanced
Pros
Great sealant
Cons
Cartridge malfunctioned
Best Uses
Comments about 3M 5200 Marine Adhesive Sealant:
Yes this is a good sealant but the 3M 5200 cartridge malfunctioned. The end disk in the cartridge rotated during use and the caulk squeezed out the back end. Very difficult to retact the caulk gun plunger and wasted a lot of expensive caulk.
Was this a gift?:
No
4/17/2012
4.0
Great stuff
By ed
from boise
About Me Casual/ Recreational
Pros
Easy to Use
Protects Well
Weather Proof
Cons
Messy
Best Uses
Comments about 3M 5200 Marine Adhesive Sealant:
Great product it has a way on jumpng on you when your not looking, pretty messy. This stuff is under 10 bucks at [@]?
Was this a gift?:
No
5/31/2011
(1 of 1 customers found this review helpful)
5.0
What can I say...?
By jdhinckley
from Vermont
About Me Advanced
Pros
Protects Well
Weather Proof
Cons
Messy
Best Uses
Outdoor
Comments about 3M 5200 Marine Adhesive Sealant:
It's 5200. Sticks like anything. Seals like nothing else, and makes a hell of a mess if you're not careful.! I think that you have to be careful where you use it. I think many people use it when they don't need to.
5/28/2011
2.0
Good Product, Defective Packaging
By kc5164
from TN
About Me Casual/ Recreational
Pros
Protects Well
Cons
Difficult to Use
Best Uses
Outdoor
Comments about 3M 5200 Marine Adhesive Sealant:
We purchased this product for use around our swimming pool, and while satisfied with the product, the problem was with the packaging. The first tube of 3M-5200 was used without a hitch, but the second tube had a defective bottom which would not slide forward to allow the product to be advanced from the tube. After trying it in 3 caulking guns, we were forced to cut the bottom off the tube, creating a mess, and leaving us with no way to direct the application of the product. In frustration, we ultimately threw away the second tube. [...] I guess I'll try to make my future purchases locally, so there will be a chance to actually speak with someone when there's a problem.
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