Flex Seal is an American brand of adhesive bonding products made by the family-owned company Swift Response in Weston, Florida.

[1] Flex Seal has become a popular internet meme due to its television advertisement demonstrations of the product in absurd and exaggerated situations, as well as Swift's enthusiasm and loud voice, much like that of late Billy Mays.

[5] The company has also made several ancillary products over the years, including Block Out, Slick Fix, Maximum Traction, Foamazing, Blast Off and Winter Wax.

A 2017 collaboration between Inside Edition, the Good Housekeeping Institute and a Lake Hopatcong marina recreated this experiment and found that although some water began to collect in the repaired boat, it "remained seaworthy" with a driver.

[8] During one 2017 race, Flex Tape was used to repair crash damage on the car that the company sponsored, which was driven by Garrett Smithley.