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3M 4000 UV Marine Fast Cure Sealant
$14.49Out of Stock
3M 4000 UV Marine Fast Cure Adhesive Sealant
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3M 4000 UV Marine Fast Cure Sealant Customer Questions and Answers

10 of 34 Questions

Question

we have a river queen steel boat with aluminum cabin looking to seal around the cabin will this work?

Asked on 05/19/2015 by jack veldkamp

Top Answer

how far did it go

Answered on 05/19/2015 by jack veldkamp
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sorry I can't help. I only used it on fiberglass. I can tell you it stuck like crazy, more than I expected for the 4000.

Answered on 05/19/2015 by BILL SMALLWOOD

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lol I would love to contact the manufacturer it is a 1969 river queen houseboat they don't make them anymore. Thanks for your help

Answered on 05/20/2015 by jack veldkamp

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It'S great for sealing, especially where you need UV protection from breaking it down prematurely.

Answered on 05/21/2015 by JIM ROBERT

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I used it behind a rub rail on a 20 ft boat so it was thick. I can't remember how many tubes t took.

Answered on 05/20/2015 by BILL SMALLWOOD

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Hard to say, the cleaner the area where the sealer is applied the longer it will last. I would contact the boat manufacturer and get their recommendations.

Answered on 05/20/2015 by DENNIS WEAVER

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I rebedded chain plates on my boat and it seems to stick very well to metal. I love the elasticity... good stuff, scuff the metal first and make sure its clean and dry... it should work.

Answered on 05/19/2015 by DAVID LINDEN

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Will work for a short time but not as a permanent fix.

Answered on 05/19/2015 by DENNIS WEAVER

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With proper prep and a good substrate this will seal and bond but remain flexible which would be good to handle the differences in thermal expansion of your substrates. Prep is key -- use a solvent to remove any contaminants, and light scuffing of shiny surfaces. Clean before you scuff so that you do not drive grease/oil into the substrates. Keep a rag/solvent on hand for immediate clean up of any mess. Good luck!

Answered on 05/20/2015 by MARK JANKOWSKI

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I recommend you google Marine Sealant Brochure and look at it online. Then contact 3M technical service whose contact info is listed at the very bottom of the web page. Below is the contact info also. Here is the # spelled out because Jamestown Distributors won't let me list the number nor the web site eight seven seven - three six six - two seven four six

Answered on 05/20/2015 by MARVIN MCDONALD
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Question

Will 4000 last in the tube after opening for later use?

Asked on 02/26/2013 by Edward Lyle Tripp

Top Answer

After I purchased it and used some of it I then put it in the basement. I opened it today and it is still good and pliable!

Answered on 03/02/2013 by MARGARET YOUNGKIN
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I didn't have much luck after a couple of days. Sealant got chunky and started to cure.

Answered on 02/28/2013 by JOSEPH PRIGELMEIER

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I have found that if the material is kept cold the cure rate slows way down. I have a half tube that is still good 2yrs later. on a 80 deg F day this stuff sets in a couple of hours and cures in a couple of days. At 35deg F it is barely skinned over at 3 weeks. If I was going to store it I would recommend closing the cap tight, putting it into a ziplock baggie, and into the refrigerator.

Answered on 03/08/2013 by NEIL BYERS

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If you store it in the freezer it will last longer. On the 5200 I used to screw a wood screw in the nozzle to bring out the dried caulk for 1 more use. It won't last any longer than a few months if not frozen. I don't know how much the freezing helps.

Answered on 02/28/2013 by James Springate

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Yes. I expected the unused portion to cure once the seals were broken. After initial use, the last half of the tube sat unused for a number of months. I came back to it for another project and was shocked to find that it was still in the same condition as when it was first used.

Answered on 03/04/2013 by TOM MANNESTO

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I didn't have much luck after a cou

Answered on 02/28/2013 by JOSEPH PRIGELMEIER

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Ted, I am using the 3M 4000 sealant to caulk my home made sailboat. I had applied it about 6-8 weeks ago and used a large nail in the tube to seal it. Last week I pulled out the nail and used the caulking and it seemed to be the same as when I first opened it. Still have some left in the old tube which I plan to use again and expect no problems since the caulking seals around the nail 'stop' and does not allow air to get in. Don't know the shelf life and how long I can do this. Just bought two new tubes to use when finishing my boat. I love this stuff! Steve

Answered on 03/05/2013 by STEVE PADULA

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Ted, I first used this product when mounting a new windshield on my boat then later came back and used it around some stainless hardware. The contents of the tube was still usable. I can't remember but seems like there was a plug of sealant in the applicator tip that had to be removed. Hope this helps superior product

Answered on 03/01/2013 by JEROD JOHNSON
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Question

how well does this cure in cool weather, lower 40's?

Asked on 11/16/2015 by matthew estes

Top Answer

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.

Answered on 11/16/2015 by STAN COLOFF
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I really don't know. Used it during summer time. My guess is that it will cure, but will take a longer time.

Answered on 11/16/2015 by CHRIS MARTIN

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thanks!

Answered on 11/16/2015 by matthew estes

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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.

Answered on 11/16/2015 by STEVE PADULA

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thanks for your reply!

Answered on 11/16/2015 by matthew estes

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thanks!

Answered on 11/16/2015 by matthew estes
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Question

I need a caulk to adhere to an acrylic window with a rubber seal. Will this caulk work on both acrylic and rubber?

Asked on 06/17/2015 by Gayle Kerch

Top Answer

do not know I used it for fiberglass to teak check with 3m

Answered on 07/02/2015 by KENNETH BANBOR
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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.

Answered on 06/17/2015 by ALBERT RYBALKIN

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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.

Answered on 06/17/2015 by ROD SIPE

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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

Answered on 06/22/2015 by STEVE WASILCHUK

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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

Answered on 06/17/2015 by WILLIAM STEPHAN
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Question

Is the sealant paintable?

Asked on 07/20/2016 by Rale Snowpaw

Top Answer

Yes after it sets or after 24 hours.

Answered on 07/20/2016 by ELISA STROH
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I don't feel that this sealant would be paintable as it's a silicone type sealant and remains flexible

Answered on 07/21/2016 by ROBERT BLAINE

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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.

Answered on 07/21/2016 by STEVE PADULA

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4000uv is paintable immediately after application - while wet or after it dries. It is not silicone based or silicone blend adhesive sealant.

Answered on 06/13/2018 by 3M Sealant Guy
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Question

What do you use to clean it up?

Asked on 11/10/2015 by Mark Schloesser

Top Answer

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.

Answered on 11/14/2015 by THOMAS JOHNSON
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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.

Answered on 11/11/2015 by ROBERT LAWTON

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I bought it but did not use it. Sorry. I would imagine it has cleanup instructions on the container.

Answered on 11/10/2015 by GREGORY PAGE

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Mineral spirits works well to clean it up.

Answered on 11/10/2015 by Rick White
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Question

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.

Asked on 06/02/2015 by Peter Lawry

Top Answer

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.

Answered on 06/02/2015 by MARK&SHELLY DEGENNARO
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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

Answered on 06/02/2015 by LIN CHURCH

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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.

Answered on 06/02/2015 by STEVEN CHRISTENSEN

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I think the 3M product is all you need. Easier to get out the screws later on if you need to.

Answered on 06/08/2015 by CHRIS MARTIN
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Question

How long are UNOPENED tubes of 5200 sealant good? Any special directions of storing unopened tubes to prolong usability?

Asked on 05/06/2015 by Undisclosed

Top Answer

I would think that 5200 would be similar to 4000 in that an open tube will be ok for a few months but it is best to match the size of the tube to the size of the job. If the opening of the tube gets plugged but the tube is pliable you can get the material out by using a nail or drill bit to open the tube.

Answered on 05/07/2015 by JOHN LEIENDECKER
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If you slap it in the refrigerator immediately after use, I have used some as much as a year later! Admittedly, you may have to run out the applicator tip with a pick or drill bit, but it seems to respond well to refrigeration.

Answered on 06/02/2015 by STEVEN CHRISTENSEN

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I've stored mine in the refrigerator and it has improved the shelf life for me...some posts I've seen mention putting them in the freezer.

Answered on 06/16/2015 by JON SHERAR

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No idea on how long they can be stored. More than a year, I have found. They have a manufacturing date stamped on the top. Anyway, they should be stored in a cool dark place for longest life. Leave one in the car in the summer and it will spoil quickly.

Answered on 05/06/2015 by WILLIAM CZAJKA
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Question

Is 4000 paintable?

Asked on 02/17/2013 by Harry Cloud

Top Answer

I sanded and painted 4000 and it seems to be holding well. Used Kirby Marine paint and seems to be a good bond.

Answered on 03/05/2013 by STEVE PADULA
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yes. I have yellow automobile paint over it and the paint/primer hasnt flaked or cracked at all. 4 years of flying. yes aircraft. Used on canopy to seal it to the canopy frame. 140mph with no issues.

Answered on 03/08/2013 by NEIL BYERS

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sorry I do not know, haven't tried to paint it. I would check with 3m directly. sorry I could not be of more help. it is great sealant though!

Answered on 02/22/2013 by CARY BRIEF

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Yes and won't yellow, but not as strong an adhesive as 3M 5200

Answered on 02/22/2013 by ROBERT LAWTON
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Question

I'm "restoring" a 63 alumiunm Lone Star 17' boat and need to seal around the transom where I have just some minor seepage. Will this work and last say a year or so?

Asked on 02/28/2012 by Randy Thompson

Top Answer

This product should work fairly well. I haven't tested it in about 4 or 5 years BUT I believe it is a "moisture curing" sealant which is good news for you. The advantage is that it doesn't have to be absolutely dry, not raining, etc., when you apply it. Moisture actually helps it work BETTER. If I remember correctly, it has a lower "Shore A" (hardness) than the 3M 5200 product so you'll get a little more flex on the seam if you need it while the 5200 will give you higher strength. but less flex. 4000 is better as a sealant because of the flexibility. Hope that helps. John

Answered on 02/29/2012 by JOHN BLASKO
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I would recommend 3M5200 for that purpose. 3M4000 is easier to tool (better for cosmetic repairs) but is not as durable as 5200. Good luck!

Answered on 02/28/2012 by DON PARKER

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Try this approach. With the boat out of the water put water in the bilge area and identify where the leak is coming from. Drain out the water from the bilge until bone dry. If the boat is on a trailer point the trailer down to let any water run to the forward end of the boat. Go on the out side of the transom and clean the area off completely with an abrasive pad and a strong solvent like acetone. Force 4000 into leak area with putty knife. Should hold more than a couple of years. Riveted aluminum boats leak at the rivets most often, so make certain you know where the water is coming in.

Answered on 02/28/2012 by JONATHAN BRIENZA

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barry n:i used 5200 for this application on what i believe is a 1958 lonestar 14.5 ft-it has been 6 years and some pounding waves and the transom hasn't leaked yet.

Answered on 01/30/2014 by barry newton
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