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Your cart is empty. Professional Grade Black 5200 - When it comes to your boat, you don't want to take chances. Our marine adhesive provides watertight bonding and sealing for fiberglass / gelcoat and wood. Creates watertight, weather-resistant, UV-resistant seals on boat hardware, joints and more
Permanent Bonding and Sealing - Our marine adhesive creates a strong, permanent bond that still maintains just enough flexibility. Perfect for use on deck fittings, through-hull fastenings, railings, transducers and more. Holds up well during vibration, movement and shock
Fast Cure, Above and Below Waterline - Unlike many marine adhesives, our 5200 FC cures within 24 hours. Work for areas above AND below the waterline. Compare to other brand's 5200 Fast Cure / FC sealants, including 05203 and 06520
UV-Resistant, Long Lasting - No more worrying about a sealant that degrades with sun exposure - our marine sealant holds up. Does not degrade in a high sunlight/UV exposure environment. Resistant to weathering and degradation in either saltwater or freshwater environments
Easy Application - A single-component sealant that requires NO mixing. Solvent-free, Non-toxic, Low VOC. No cracking or peeling! 10oz tube, BLACK sealant. By Berkland
Tim V
Reviewed in the United States on February 27, 2025
Goes on very smooth. It's kind of like a roof tar but not quite as sticky/messy. It also leaves some residue on hands that can take a washing or 2 to get off (hence why they provide the gloves!) Time will tell how it holds up but I'm happy with it so far.
Mike MacDonald
Reviewed in the United States on February 25, 2025
Really nice sealant that worked great around my treehouse. I used this to seal some windows and spots where joints didn't quite come together and it seems to be high quality sealant for those uses. Don't get this on your clothes because it stays there (I learned this the hard way).
Cat Martin
Reviewed in the United States on January 7, 2025
I have a 5-window minibus that I have worked on to make into my tiny home on wheels for the next year or two. I wanted a very different "front door" than the dual opening bus doors and the 3-step entrance. What I bought was a foam marine runner that was made for a boat deck, so it is tough, able to stand water and is slip-resistant. The decking has a really nice, elegant pattern of a grey background with black cross-hatching. I purchased grey stair edge protector material so it looks good together. The bus' original stair material was okay...hard rubber with slightly elevated bits in the tread, but just rather ugly. I removed that original rubber treads, cleaned the base steps, measured each stair step and cut the marine decking material. I put this marine adhesive on the back and with a gloved finger, smoothed it across the underside and then laid the new stair material down I used a small, wooden roller to really get a good seal between the decking material and the stair base. The stairs were the main piece, but the black rubber extended in a sort of triangle piece that butted against the driver's seat and stopped at the "entrance" to the bus proper - a rubber runner was part of the seating area and that's where this entrance rubber material stopped. I used the last of the marine decking on that larger area and it also needed a good coating of this marine adhesive and with the roller, that piece was also firmly in place as it should be. Then I used the grey stair edging to complete the stairs, but while it had adhesive on the edging on both top and side, I used more of this marine sealant to be sure it was "good and stuck" like the stair tread pieces. It took some time and some work just on those stairs, but the end result was so worth it and I feel very confident in this marine adhesive to keep me safe when stepping up on the stairs of my tiny home.
Bbells
Reviewed in the United States on January 30, 2025
Perfect for 'resoling' my Mukluks. Worked better than I expected.
M. Merritt
Reviewed in the United States on January 16, 2025
I have been rebuilding a boat with my son and have used a major brand 5200 for most of the project. This is about half the price and seems to be of similar quality! The major brand I used on parts below the water line, but the included pictures are for the splash well that we glued with this product and screwed to the new transom installed on the boat. The adhesive holds well and set up relatively fast in our current cold weather. It is easy to work with, very tacky as you would expect, so you can even work over head if needed. Flows from the tube pretty easily. Most of the work I have left to do is above the water line but will still need to be able to keep water out, I will be ordering more for sure.
Thomas K.
Reviewed in the United States on January 14, 2025
I used this adhesive sealant to fix a leak in a PVC pipe, and it worked quite well. The consistency is very thick and sticky, which actually helped it stay in place during application. Even though it’s thick, I found it easy to apply with a bit of patience, and it adhered quickly to the surface. After curing, the bond felt strong and watertight, which is exactly what I needed.I also appreciated that it’s UV resistant, so I’m not worried about exposure to sunlight affecting the repair over time. It’s designed for both above and below waterline use, making it versatile for different types of sealing jobs. So far, the seal has held up without any signs of leaking, even under pressure. Just a heads-up: be prepared for a bit of cleanup afterward since the adhesive is quite sticky, but that’s to be expected with a product like this.Overall, it performed as intended, and I would use it again for similar repairs.
Old Work Bench
Reviewed in the United States on January 12, 2025
I am going to use it to seal a square 2 inch tube to a concrete pad. I am having a metal shed installed and hope this will help with water coming in under the tube. I have a slab that is not going to allow the siding to drop down past the floor on one side and after looking at everything from epoxy to supper glue I am going to use this. It has the best shot at sealing it I think. At worst it will leak less I hope!!
TaylortheWhaler
Reviewed in the United States on December 28, 2024
Not sure how long itll last compared to 3m, but so far so great.Make sure to test the texture and the way it comes out of the caulking gun first, viscosity is a little different than name brand.Super happy with it so far, at a great price
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