COVID-19 Update: We are open & shipping orders! We are working hard to ship as quickly as possible, while ensuring the safety of our associates. Please note: we have closed our Bristol retail store. Click for details
Jamestown Distributors(800) 497-0010
Click to watch the JD Search Tutorial video & learn
all about searching and browsing on Jamestowndistributors.com
3M 4000 UV is a fast cure medium strength sealant used to bond and seal metal, gelcoat, fiberglass, wood, and plastic. A one-part polyether adhesive sealant with excellent UV resistance, 4000 cures to a firm, rubbery, watertight seal. This sealant is ideal for bonding deck hardware, hatches, portholes, railings, and navigation lights.
Suitable for use both above and below the waterline, 4000 Fast Cure is sometimes more appropriate than 3M 5200 polyurethane for parts that may never need removal or replacement. Available in White in various sizes.
The item was added to your wishlist.
The item was added to your shop cart.
Superior UV resistance
Exceptional sealing properties with Fiberglass, Deck Hardware, and Hatches
Becomes tack free in 2 hours and cures in 24 hours
Does not resist chemicals—for chemical resistance, try 3M Marine Sealant 101
Below Water Line (yes/no):
Rate Of Cure:
I need 3m 4000 in BLACK. 3 tubes of 1/10 gal size. Do you carry it in Black?
It does not appear that black is an available color any more.
JD Tech Associate
I am looking to use this in a marine application. Is the 4000 more easily removable that the 4200 or the 5200 ? I need to apply intake grate to a PWC/ Jet Ski. If I want to change out the intake grate, which should I use ? I want the one thats the most easily removable
The 4000 is UV resistant and will not yellow if left in the sun, easily removable, more so than 4200.
JD Tech Team
Is the sealant paintable?
Yes after it sets or after 24 hours.
I don't feel that this sealant would be paintable as it's a silicone type sealant and remains flexible
Yes, according to 3M oline data sheet it is paintable but check for compatibility first. I have painted over it with Geo. Kerby marine paint with success.
4000uv is paintable immediately after application - while wet or after it dries. It is not silicone based or silicone blend adhesive sealant.
3M Sealant Guy
Can 4000UV be coloured and if so by what? I prefer not to use a silicone base sealant on the boat. It is a plexiglass hatch cover to a teak frame sealed with CPES. I also do not think 5200 is a good option.
I agree 5200 is a total non starter. I also have never liked using any kind of silicone caulk anywhere on the boat. I just don't trust the stuff, especially out partially exposed to the elements. My preferred would be butyl, but it is less than ideal for this application due principally to the construction, e.g. a 24 inch square about 1 1/2 inch wide with the pexi screwed down about the edges
Can't help on the coloring, as I haven't tried that. Agree that 5200 isn't the best choice in your case.
If you never ever what to remove someting, 5200 is your choice. Transducers, shaft skegs, bronze or stainless fittings it's the best. For everything else, I use 4200 or 4000UV. I never heard of being able to color them. You might want to shoot 3M a question. I would use clear silicon sealant for best results. Also, Jamestown has this info. See if it helps.< a href="http://www.jamestowndistributors.com/userportal/document.do?docId=510" target="_blank">http://www.jamestowndistributors.com/userportal/document.do?docId=510< /a>Robert
how well does this cure in cool weather, lower 40's?
I've had no direct experience using this material in the lower 40s...as a chemist I know cure time is a function of temperature. I estimate cure time at 45F will be 3X the cure time at 70F.
I really don't know. Used it during summer time. My guess is that it will cure, but will take a longer time.
I used this 3M product during warm weather so I don't know. I would imagine on the 3M website they would provide a range of temperatures for application. Good luck.
thanks for your reply!
What do you use to clean it up?
It's been a couple of years since I used it, but I don't recall any clean up problems. I used it to run a small bead of sealant along the top of a plastic rub rail along each side of my 45' yacht. I would not use or recommend this product again. After 2 years in the sun, it has become "mushy" and literally wipes off.Cannot understand what happened since 3M claims excellent UV resistance.
Before it is fully cured you can clean it up with Xylene or Goof Off (witch is mostly Xylene)After full cured it must be removed mechanically with scraper, razor blade, etc. but it is not as hard to remove as 3M 5200.
I bought it but did not use it. Sorry. I would imagine it has cleanup instructions on the container.
Mineral spirits works well to clean it up.
I need a caulk to adhere to an acrylic window with a rubber seal. Will this caulk work on both acrylic and rubber?
do not know I used it for fiberglass to teak check with 3m
It will on acrylic, but I'm not sure about rubber. Rubber is not an easy material to adhere to. I would suggest to check with 3M directly.
I don't know about plexiglass or rubber, I used 4000 recently for bedding a new teak toe rail on an old fiberglass boat, the deck painted with Interlux deck paint, and it worked great for that, more flexible when dry than 3M 4200. The issue will be if the flexibility of the rubber components causes the seal to separate over time. Its worth a try, 4000 is pretty flexible, buy one of the small tubes and try it out, put a dot on the rubber, let it dry and see if it works. Any of the 3m products, 5200, lasts forever then a chisel, 4200, half the strength of 5200, or 4000, most flexible, are superior to the Boat Life product line.
Will work but is quite permanent - a friend who is a boatwright suggested marine silicone (not paintable) - also check out Boatlife - both can be removed more easily - 4000 is tough to remove
ABSOLUTELY! If you can scuff sand with some 320 its even better. SUB must be clean and dry; I masked off a border on top and bottom for a sharp edge. The 4000 skins over within 15 minutes so its time to pull the tape. Unlike 5200, parts can be disassembled without destroying them. Clean knives/spatulas with mineral spirits. Can be messy if yer not careful. Can be sanded and painted after a full cure of a few days... Bill in TR
I need a caulk for an acrylic window framed with rubber seal so it needs to adhere to both the acrylic and rubber. Will this one work?
Yes. We use the 3M 4000 UV to seal aircraft acrylic windows to the composite and metal structure.Works Great!
How long are opened caulking tubes of 3m 4000 good for?
They seem to last longer if you cap the tube and put it in the refrigerator
Sorry, I don't have a definitive answer for you. I do know after using the sealant when attaching a new windshield on my boat, I left the sealant in the applicator tip. A couple years later I tried to use the remaining product but the entire tube was cured.
Can i use this sealant to seal the pilot holes for the screws securing my deck hardware or should i put epoxy glue in the pilot holes and use the 3M 4000 for sealing the base of the hardware to the deck? Please advise.
Yes you can I insert the fastener into the hardware apply the 4000 to the hardware and 1" down the fastener it will drag the 4000 into the hole with the fastener when installing the hardware I have used 4000 for 7 years and am very happy with it.
Yes, although my experience w/ this product is limited. It seems to be 3M's effort for a quicker drying product. My "Go to" for most permanent applications has always been 3M 5200. And for really permanent STRONG attachments (like under cleats) nothing beats two-part West System epoxy.Lin C
4000 is completely appropriate for sealing deck screws. Epoxy doesn't respond too well when up against a dissimilar material and then flexed or stressed.
I think the 3M product is all you need. Easier to get out the screws later on if you need to.
I had good success with this product.
I used it to seal floor hatches and seal the console to the deck. It was easy to work, good results.
tape before cauking
seaside park nj
this product works for me
I used this product on a boat project, I took an old boat 79, and rebuilt it, this product was very usefull in filling the multitude of holes that various owners had put in the boat, it worked very well for use with fasteners of different kinds,to seal them from leaking it covered well with paint. It is a bit messy to use and caution should be used when using it, to keep from getting it in places you do not want it. It cures quckly, and can be sanded to some extent, not recomended for a dent filler or anything like that.
Choose this from long list of caulks available based on price & durability yet removable.
muscle shoals, AL
Wrong quantity tube used in ad
An excellent, easy to use product. Jamestown should use the correct illustration for the 3 oz. tube.A 10 oz. cartridge is shown. Otherwise, an excellent product.
Better for deck hardware than 4200
Tried both 4200 and 4000 for deck hardware/trim. 4000 stays white and is easier to clean up.