

⚓ Seal it fast, seal it strong—marine-grade confidence for your next big project!
3M Marine Adhesive/Sealant Fast Cure is a high-performance polyurethane sealant designed for superior bonding above and below the waterline. It cures quickly to a tack-free state in 48 hours and fully cures within 5-7 days, maintaining flexibility to accommodate structural movement. With excellent resistance to saltwater and weathering, it’s the go-to sealant for marine and outdoor applications requiring durable, long-lasting adhesion.






































| ASIN | B000XBFCUO |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 265,694 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,722 in Sealers |
| Colour | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,207) |
| Date First Available | 8 Dec. 2010 |
| Included components | CAULKS / SEALANTS / EPOXIES |
| Item Package Quantity | 1 |
| Item Weight | 395 g |
| Item model number | 5200FC |
| Manufacturer | 3M |
| Material | Polyurethane |
| Number of Pieces | 1 |
| Part number | 00051135065204 |
| Product Dimensions | 33.02 x 5.08 x 5.08 cm; 394.63 g |
| Size | 10 fl oz cartridge |
| Special Features | Fast Drying |
| Specific uses | Marine |
B**Y
Kitesurf Bladder repair
Brilliant for repairing kitesurf bladder
C**G
Super strong
Bonded solar panels to my motorhome fibreglass roof. This stuff is seriously strong. You get what you pay for!
G**H
Works great BUT must be stored correctly
Used this to repair some Waders with some tiny holes in, works great dries fast and with some permanent marker over the top you cant notice it. Only gripe I have which is pretty self explanatory is once opened it does go off very quickly in the tube rendering it useless unless you cut the tube to get to the not dried out sealant. Would recommend decanting into a air tight tub to prevent this.
E**E
Excellent
Used this to attach silicone flashing to a cement panel and the cement panel onto a caravan roof in the rain. Not one leak.
A**D
Good product. Delivered in-time.
L**T
Definitely a very high quality silicone, very strong and weatherproof. Better quality than most off the shelf silicone if you need superior holding power that is weatherproof
R**L
muy bien. es este que queria. gracias
A**R
On of the best sealents. Highly recommend I have used this sealent for making tube tyre rims tubless.
G**C
Stuff is amazing. Super strong bond. Glued the pedestals in my boat for the seats to bolt onto. They will never move now.
Trustpilot
1 day ago
1 week ago