Marine Sealant and Adhesive, Waterproof Marine Grade Caulk, High Temp Water Sealant for Boat, Auto, RV, Without Silicone - 1 Tube, White, 10 oz
Condition: New
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Availability:
In Stock.
Arrives
Thursday, May 28
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Color: White
Size: 10 oz
Features
- HEAVY-DUTY ELASTOMERIC SEALANT: Waterproof long-lasting superior strength above & below waterline to repair seams and stop leaks. Seal ports, wind-shields and more. Remains Flexible and can twist, bend, expand and contract with weather conditions.
- FLEXIBLE PERMANENT BOND UV LIGHT AND SALTWATER RESISTANT: One-part sealant that forms a tough yet flexible permanent bond resistant to sunlight, rain, fresh & salt-water. Fast cure formula cures white then can be sanded and painted unlike silicone.
- SEALS & ADHERES TO MULTIPLE SURFACES: Marine Adhesive works with fiberglass, glass, plastic, metal & wood. Safely and securely repairs windshields, joints, hardware, aluminum boats, pool decks, aquarium sealent , pool caulking , RV and Auto repairs.
- MADE IN THE USA & EXCEPTIONAL QUALITY: Made by boaters for boaters, our waterproof sealant and other products are made to strict, tested, trade-secret standards and you will find this premium marine sealant is no exception.
- WHY BETTER BOAT: An American company with a line of premium quality boat detailing supplies. We offer the tools and products needed to make caring for your boat easier so you can spend more time on the water.
Color: White
Brand: Better Boat
Item Weight: 10 Ounces
Liquid Volume: 10 Fluid Ounces
Item Form: Liquid
Brand Name: Better Boat
Manufacturer: Better Boat
UPC: 850009198198
Unit Count: 10 Ounce
Material Type: Elastomeric
Surface Recommendation: Door, Sink, Tile, Tub, Walls, Window
Water Resistance Level: Waterproof
Color: White
Item Form: Liquid
Item Weight: 10 Ounces
Liquid Volume: 10 Fluid Ounces
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 28
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Color: Gray
Size: 10 oz
Works as advertised. I used it to reinforce boat flooring that I repurposed as cover for the benches on a small vintage fishing boat. After a few months out on the water, this produce still sticks like the day I installed the flooring. Good produce for marine use.
Reviewed in the United States on November 29, 2025 by Blaze Gomez
Color: Black
Size: 3 oz
Bought this to seal up some leaks in a kayak hull. It worked exceptionally well. No leaks after many trips to the lake and river. I do recommend this product.
Reviewed in the United States on September 1, 2025 by Woodness
Worked great. Stopped a small leak around a screw in my kayak. Very sticky and messy to apply. A tapered tip would make it easier and less messy to apply to small areas. Probably should have worn gloves when using. As it sticks to everything it touches. I only needed a small amount, and I have plenty left over.
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Reviewed in the United States on July 16, 2025 by Tracy B
Color: Gray
Size: 3 oz
Great stuff. miracle material. underwater, overwater, quick cure, etc. the first tube that I bought- stuff is thick, as I was squeezing it, it leaked at the crimp and also around the round transition on top- I may have been squeezing too hard (?) or didn't cut the nozzle as big as I needed. reached out to company- they have a satisfaction guarantee. and they painlessly sent me another tube. !!!
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Reviewed in the United States on July 4, 2025 by J. Buckman
This sets up very quickly, yet takes a long time to cure. Stays pliable weeks later. Highly recommend. Wish it came in a larger tube.
Reviewed in the United States on August 18, 2025 by Michael Hathaway
Color: White
Size: 10 oz
This product was used for a small hole and failed significantly. Although the seller says he will stand behind this product he does not at all..
Reviewed in the United States on March 25, 2026 by consumer
Color: White
Size: 10 oz
I should send it all BACK. First off, the design of the tube is ridiculous. Try as I might, I couldn't get it to fit a standard caulking gun. Never in my life have I EVER had trouble with any other product not immediately fitting a caulking gun. It should drop in at once with NO hassle and be ready to use. NOT THIS STUFF! It was a complete and expensive waste costing 20 bucks a tube. I'm going to back to DICOR and other products I've used for years when resealing my two camping trailers. I threw this junk into a box in my shed where it'll likely remain for the rest of my life. I don't give a damn how good the product's supposed to be when you can't even get the damned tube into a caulking gun! Buyer beware. If there were a way to rate this stuff as a -50, I'd damn well DO IT. Save your money and your sanity and stick with the far better known and much easier to use other products that have been around for years long than this crap. If they can't even design a standard, ready to use tube, I wouldn't put much faith in the product, either.
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Reviewed in the United States on August 17, 2021 by Ken
Color: Clear
Size: 10 oz
It worked good for my application (garage siding contact with my concrete). Applied easily and good sealing. It skinned over in about 30 minutes to an hour so I had time to work with it but it takes 7 to 10 days to cure depending on temperature, humidity and quantity used and customer service said that a 100 percent cure may take up to 30 days. It did get relatively hard in 5 days and did repel rain after it skinned over. I wanted a clear caulk/sealant and I would use it again where cure times are not critical. The end cap ring on a few tubes was oversized - so it was a tight fit getting it in and out of the caulking gun and the end cap ring came off when I took the tube out of the caulking gun - I had to pry the end cap ring out of the caulking gun which wasn't too hard to do but with the end cap ring off now it would be easier to get the tube back into the caulking gun next time and it didn't affect the operation of the tube.
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Reviewed in the United States on September 25, 2022 by Dan Ullberg