Flex Seal

Flex Seal is the channel for the products of the Flex Seal Family.

Waterproofing My Life With FLEX TAPE
JonTron made a video about Flex Seal titled My Life With FLEX TAPE Waterproofing My Life With FLEX TAPE, this became JonTron's most popular video and making Flex Seal go up in Popularity.

Flex Tape II: The Flexening
JonTron a long time later made a sequel to Waterproofing My Life With FLEX TAPE Titled Flex Tape II: The Flexening, in this video JonTron worked with Flex Seal themselves, he had Flex Seal as a sponsor on that video.

Memes
The Memes around Flex Seal started when JonTron made Waterproofing My Life With FLEX TAPE memes started around Flex Seal, the most famous one is the "That's a lot of damage!" Meme.