

⚓ Seal your legacy with the ultimate marine adhesive!
3M Marine Adhesive Sealant 5200 is a high-strength, moisture-curing polyurethane designed for permanent, waterproof bonding above and below the waterline. Trusted for over 50 years, it offers a flexible, durable seal with a tensile strength of 700 PSI and achieves handling strength in 48 hours, making it the go-to choice for professionals demanding reliable, long-lasting marine repairs.

| ASIN | B00AZA3DY0 |
| Best Sellers Rank | #29,837 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #91 in Adhesive Caulk |
| Brand | 3M |
| Brand Name | 3M |
| Color | No Color |
| Customer Reviews | 4.1 out of 5 stars 445 Reviews |
| Full Cure Time | 48 Hours |
| Included Components | 3M 7000000623 Marine Adhesive Sealant - 10 oz., White |
| Initial Hardening Time | 48 Hours |
| Item Form | Oz |
| Item Type Name | 3M 7000000623 Marine Adhesive Sealant - 10 oz., White |
| Item Weight | 0.9 Pounds |
| Liquid Volume | 10 Fluid Ounces |
| Manufacturer | 3M |
| Material Type | Plastic |
| Surface Recommendation | Miscellaneous |
| Tensile Strength | 700 Pounds Per Square Inch |
| UPC | 638060094990 |
| Unit Count | 10.0 Fluid Ounces |
| Warranty Description | Warranty |
| Water Resistance Level | Waterproof |
A**R
Great sealant - used to reseal around my pool skimmer and also some leaking waders
Good permanent sealant - takes a day or so to harden but great stuff
A**R
TOP OF THE LINE
THE BEST OF THE BEST
D**R
Missing Applicator
Great product if I had an applicator. As other reviewers have noted, received sealant without applicator nozzle so I am unable to use. I figured maybe seller would have corrected this problem but I figured wrong. Tube is in good shape though. MFG date 01/29/24. "Free" returns means a 70 mi round trip to nearest UPS store.
J**K
Tried and true adhesive sealant for marine use or anywhere you need a permanent mounting
Folks, if you have something that needs to be waterproof and almost permanently attached, this is the stuff! I worked for years in the boat business, and this is a "can't live without it" kind of product. It sets up and cures underwater and is immediately waterproof. The adhesiveness of this product can't be over-stated; don't stick it if you plan to move the item later. I've patched seats. convertible tops, and mounted thru-hull fittings WHILE IN THE WATER. It can be removed but it won't be easy. No, its not cheap but it does exactly what it says, and the peace of mind is well worth the price.
P**A
This does what it says it will do
This product was used to help repair a very old cement statue that sits in a fountain and has a tube running through it to the top of the head to create a nice bubbling and trickling effect. After days or rain, the ground gave way under the heavy fountain and the little girl fell over, breaking the neck. The tube held the head and rest of the body together, but a large amount of cement around the neck crumbled. We applied this as a filler around the head and neck after using a cement adhesive to glue the head back onto the neck and shoulders. In a few days, all was dry, and it rained again--but this sealant held. Being waterproof is a necessity for a fountain statue and cracked fountain bowls.
A**.
Sometimes ships as just the tube without the Nozzle
Always a good product, but the first order came without a nozzle. Hard to use the product without a nozzle so it delayed my project by 2 days. My second order did come with a nozzle so I had to go through the trouble of returning my first order.
R**.
Awesome
Great
B**.
Amazing product.
This product was recommended to me for use as a glue for brackets on the roof of a van that would hold a solar panel. This stuff is GREAT! A little messy to use but dries to the touch within a few hours and was completely cured within the timeframe stated on the label. It has not degraded at all on the roof of the RV which is constantly in harsh sun and rain and NOT garaged. I would not hesitate at all to use this as a glue for almost any application where a secure bond is required. You will definitely need to allow it the proper time to cure prior to use. It's costly but well worth the expense.
Trustpilot
2 days ago
1 month ago