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🛥️ Seal it once, sail forever – the ultimate marine-grade bond!
This 10 oz tube of Better Boat Marine Sealant is a high-performance, waterproof, elastomeric caulk designed for marine, automotive, and RV applications. It forms a flexible, permanent bond resistant to UV rays, saltwater, and high temperatures, adhering to multiple surfaces like fiberglass, metal, and wood. Made in the USA, it cures fast, sands and paints easily, ensuring durable leak protection above and below the waterline.












| ASIN | B07V5QDLR4 |
| Best Sellers Rank | #37,966 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #98 in Silicone Caulk #608 in Industrial Sealants #61,600 in Hardware |
| Brand | Better Boat |
| Brand Name | Better Boat |
| Color | White |
| Customer Reviews | 4.3 out of 5 stars 733 Reviews |
| Item Form | Liquid |
| Item Weight | 10 Ounces |
| Liquid Volume | 10 Fluid Ounces |
| Manufacturer | Better Boat |
| Material Type | Elastomeric |
| Model | BB-MRSL-WHT |
| Number of Items | 1 |
| Part Number | BB-MRSL-WHT |
| Surface Recommendation | Door, Sink, Tile, Tub, Walls, Window |
| UPC | 850009198198 |
| Unit Count | 10 Ounce |
| Water Resistance Level | Waterproof |
B**Z
Works!
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.
P**.
Waterproof
Excellent product
T**B
Easy to use
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.
L**T
Very satisfied with waterproofing
Very nice and so far working great Only negative is the applying tube was bent about 45 degrees. Package was not damaged at all. I bent it back straight and was able to use
J**N
Great product, Great customer service.
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. !!!
C**R
Seller and product both failures.
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..
M**Y
Excellent Adhesive
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.
D**G
Worked good but has longer cure times
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.
J**E
Boat sealant
Easy to use, good adherence
D**C
quality
looks good, dries fast, and is an excellent product.
R**N
Qualité marin
Bon produit. Fait pour mon bateau de plaisance au plancher. sèche vite et résistant aux intempéries. Je recommande pour les bateaux.
M**T
Il y a beaucoup de retrait en séchant
J’ai essayé de remplir les vides entre les planches du pont de mon bateau,il y a eu trop de retrait mais devrais faire pour autre chose
A**R
sealant
still havent used it but im sure its ok. Purchased to seal holes on transom that will hold swim ladder.
Trustpilot
2 weeks ago
1 week ago