Flex Shot brags that it’s the easiest way to caulk, bond, and seal virtually anything. They claim their caulk-in-a-can is ideal for hundreds of household projects, including fixing leaks and filling huge cracks and holes.

Flex Shot says it is brought to you by Phil Swift, the maker of Flex Seal, a popular spray-on rubber sealant. Flex Seal/Shot appears to be based out of Van Nuys, CA but the business is neither rated nor accredited by the BBB.

How Flex Shot Works

Flex Shot seems to be a pressurized dispenser of a caulk-like substance. They tout it’s the neat and clean way for anyone to easily make repairs and that it’s made in the USA. They claim unlike regular caulk, it doesn’t dry out, shrink, or crack, lasts up to 30 years, and there is no waste. They tell you to throw away your old caulk-and-gun and that you can use your can of Flex Shot again and again.

They indicate you can use Flex Shot on almost any surface, in kitchens, bathrooms, for crafts, plumbing or structural leaks, and both indoors and outdoors, as long as it’s a well-ventilated area. Simply point at a 45 degree angle, press against the spray tube, and run along the seam you are trying to seal. Flex Shot also includes an extension tube they say you can cut to adjust the thickness of the bead as well as accessing hard-to-reach areas with pinpoint accuracy.

When done, they say to release the tube and wipe excess with finger or dry paper towel. They claim you will have a perfect beaded seal that is completely waterproof every time with no running, dripping, or mess. While they say it’s better on a dry surface, they say you can use Flex Shot on one that’s wet, but not in standing water.

They declare that using Flex Seal will help prevent mold and mildew. They assert it will adhere to almost any surface that’s free of grease or oil, including porcelain, tile, metal, glass, fiberglass, wood, granite, stone, marble, fabric, upholstery, and paper. They claim you can use it to fix broken ceramics.

They say Flex Shot comes out nice and thick, allowing you to fill larger cracks and completely plug holes - a demonstration video on the website shows it quickly sealing a large hole in a 5-gallon bucket with no water escaping. They say Flex Shot dries in 20 minutes to the touch and is fully cured in 48 - 72 hours, which they claim is much faster than caulks or other sealants

When Flex Shot is dry, they claim it turns into strong rubber that both expands and contracts. They tout some of its uses include on sinks, showers, tubs, tiles, windows, skylights, roofs, gutters, autos, boats, RV’s, campers, PVC, ducts, decorative items, and more. They exclaim it will not fade, dry, crack, yellow, or deteriorate from contact with household cleaners. They add it can withstand temperatures from -76°F to 350°F. They caution that Flex Shot is not recommended for use to fix tires or under extreme pressure; that it has not been tested on portable drinking water systems; and that you should not paint over the seal. They claim one can of Flex Shot is good for 50-100 linear feet, depending on the thickness of the bead.

Flex Shot comes with:

  • 1 can Flex Shot (White, Clear, Almond, or Black)
  • 1 reusable extension tube
  • 1 extra can and tube free
  • 1 can Flex Seal (extra S & H)

Flex Seal Pricing, Shipping, and Returns

Flex Seal is sold as “buy one get one free” on their website for $19.99 plus $9.95 S & H for a total of $29.94 for 2 cans/extension tubes. You can add a “free” can of Flex Seal for an additional $9.99 S & H for a total of $39.93. (You can also add shipping insurance in case of loss, damage, or theft for $1.99.) They ask that you please allow 2-6 weeks for shipment. When you receive your order, they claim you have a 100% satisfaction guarantee, but the fine print reveals you may only return UNUSED cans for a refund, minus S & H and what it costs to return.

Bottom Line: Is Flex Shot a Scam?

Caulking guns can be drippy and messy, so we love the convenience and ease-of-use of Flex Shot. We’re not so crazy about its return policy or the expensive shipping fees. Some have also pointed out that Flex Seal appears to rubberized undercoating, which can be bought at any automotive store. We suggest if you do buy this product, don’t add the Flex Seal.