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Better Boat

Marine Sealant and Adhesive, Waterproof Marine Grade Caulk, High-Temperature Water Sealant for Boat, Auto, and RV, Silicone-Free, White, 1 Tube, 10 Oz

    • Based on 662 reviews
Condition: New
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$25.99 Why this price?
Save $5.20 was $31.19

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Non-returnable. Transportation of this item is subject to hazardous materials regulation

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Apr 29
Order within 4 hours and 13 minutes
Available payment plans shown during checkout

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Color: White


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: 1E+1 Fluid Ounces


Item Form: Liquid


Package Dimensions ‏ : ‎ 11.2 x 1.9 x 1.9 inches; 10 ounces


Item model number ‏ : ‎ BB-MRSL-WHT


Date First Available ‏ : ‎ September 30, 2019


Manufacturer ‏ : ‎ Better Boat


Best Sellers Rank: #32,899 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #38 in Silicone Caulk #344 in Industrial Sealants #36,832 in Hardware


#38 in Silicone Caulk:


#344 in Industrial Sealants:


#36,832 in Hardware:


Customer Reviews: 4.4 4.4 out of 5 stars 662 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Apr 29

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • works great
Color: Gray
i don't know what people are crying about .. its sealant and works great flow is nice , tapeoff your areas where you dont want sealant , flaten it out with your finger and pull the tape off after ... plus it comes in colors i used grey
Reviewed in the United States on November 16, 2024 by joel
    • Very reliable, if not in stock, it will show up
Color: White
Excellent service
Reviewed in the United States on February 27, 2025 by Henry
    • Definitely takes 10+ days for full cure.
Color: Black
This sealant does work very well! Just be sure to give it time to cure!!! I did not give it enough time the first use “8days” and so my seal failed… ya live and ya learn!..
Reviewed in the United States on August 24, 2023 by Michael k.
    • Delivered very quickly
Color: Clear
Product was exactly what was needed to address problem with boat
Reviewed in the United States on February 19, 2025 by Jackie Smith
    • This really works!
Color: White
I needed to seal the joints on a leaking stock tank. I've tried other products and nothing every worked.. This is working well.
Reviewed in the United States on September 9, 2024 by ernie
    • Good
Color: Clear
Good
Reviewed in the United States on February 9, 2025 by HH928
    • For The Cost, I'm NOT Impressed!
Color: White
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. ... show more
Reviewed in the United States on August 17, 2021 by Ken
    • Good stuff
Color: Clear
Good for sealing rv roof seams, will buy again.
Reviewed in the United States on October 2, 2024 by david

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