Flex Seal Spray on Sealant Weatherproof Caulking for Marine and Boat

(7 customer reviews)

$19.99 $12.99

  • The easy way to coat, seal and protect
  • Stops rust, corrosion, and water intrusion
  • Flex seal rubber sealant stops leaks fast
  • Excellent for boats, yachts, canoes, kayaks, restoration projects, decking, hull, canopies, weather stripping and so much more
  • Clear coloration allows it to blend in with ship’s color and design
SKU: 0289257 Category: GTIN: (01)00965295331140


Flex Seal Marine Sealant coats, seals and protects. It stops leaks fast, making repair jobs easier. This clear liquid rubber sealant is excellent for boats, yachts, canoes, kayaks, restoration projects, decking, hull, canopies, weather stripping and so much more. It helps to prevent rust, corrosion and water intrusion on your watercraft. Its clear coloration prevents it from standing out on your ship, hiding your repairs and keeping your ship looking pristine.

Reviews (7)

7 reviews for Flex Seal Spray on Sealant Weatherproof Caulking for Marine and Boat

  1. M. Downes

    I didn’t think it would work, but decided to try it. Actually the mechanics with me tried it. and it worked. I don’t know how large a hole it will repair but we experimented on some drain pans, and inside of fan in the drain pan and it worked. So I would try it again.

  2. Jeff R.

    I ordered this product in hopes of fixing a leak in my boat. After filling the major portion of the crack with an epoxy I heavily coated over the top with the Flex Seal. I didn’t even wait the full amount of time recommended for the product to cure. Had a great day of fishing and no worries of my boat sinking!

  3. chuck3337100

    This was exactly what I needed. It did the job it was called on to do.

  4. U. Lim

    So pros and cons. The main pro is this product is a quick fix for leaks the clear is great for a bit of extra protection to places that get hit hard by water. The cons, High heat turns this product into goo. My suggestion would be to use this on the underside of a leak for its great penetration and staying power. And treat the top side of the leak with something with a bit more heat resistance. I have done two sinks, a bathroom, two tables, a shower, and a few random projects *including a hat*, for wood, i cant think of much better, the table i did six months ago has a sturdy top layer with no issues.

  5. Keith Motes

    Excellent product to have on hand, is useful in a whole bunch of projects. I use flex seal instead of rust-oleum paint for my outside metal ornaments, works great. I just wish there were more colors available. Also Thank you for such fast shipping.

  6. WMS

    This product can be used for many different things. I am trying it now for wooden marking sticks to see how the sticks fare with the ground humidity and termites. Did not know how to grade it Style, so I gave it 3 stars. What Style?


    While this is a great product, I had to give 3 stars. The reason is that, like you, I bought this stuff because of those goofy commercials. The product does not work as advertised. It does, however, work. You will have to apply multiple coats. You cannot apply to a wet surface. It can peel off from plastic, ceramics, and some other surfaces.

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Shipping & Delivery

Most of our orders are delivered via China Post, with the larger items being delivered via sea shipping

The majority of orders are dispatched from the As Seen On TV warehouse within 2 business days. Please allow up to an additional seven days for China Post to deliver your order. Some of our best-selling products can take up to 28 days to be delivered at times if we are experiencing unexpected levels of demand. We will always do our utmost to get your order to you as soon as possible.

You can order from outside China but you have to pay shipping cost.

You have to be home when product is delivered, however if you are not home, the delivery person will find a safe place to leave the item if possible, otherwise they will leave a card with instructions on how to pick up the delivery from your post office outlet. You can also specify a different delivery address, such as a neighbour, or your work address.

If you received your order with a missing part, you can request a replacement by calling our customer service team on 400-801-8585 or send us a email.