Is Flex Seal the Best? Let's find out!

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  • Published on:  Saturday, December 1, 2018
  • Flex Seal goes head-to-head against Rustoleum and Perma-Seal in 4 different tests. Will Flex win the showdown? Let's do some damage and see just how good Flex Seal is at fixing the damage compared to the competition! I'm not sponsored by Flex Seal, Rustoleum, Perma-Seal or any other brand. I only provide unsponsored, unbiased testing. Thank you very much for supporting the channel by watching the commercials and through Patreon support.
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  • MCPE_HAX215


     4 hours ago

    Flex seal is the best because its approved by Phil Swift

  • George Smith

    George Smith

     10 hours ago

    I need this for my boat to cover the fuel fill caps but it must be reversible after winter is over.

  • Tam Bol

    Tam Bol

     19 hours ago

    Any one of these products will work to fix Don Lemon's leaky ass.

  • tejas


     yesterday +1

    for spray applications , its an overkill and time consuming but has never failed me. 1st Rustoleum - 2nd Perma~Seal -
    3rd Flex Seal allowing 48 hrs between coatings. Each product has one thing they are better at than the others so using
    all three gives you the total package.

  • حمزا وي

    حمزا وي


    Good job ❤️

  • Mark Jerrel

    Mark Jerrel

     5 days ago

    Flex tape works great for everything I have used it on except a leak in a gas can it won't work

  • Joe Stevenson

    Joe Stevenson

     5 days ago

    The bucket test was pretty unfair to the permaseal. That pinhole leak was almost definitely an application issue.

  • Jamison


     5 days ago +1

    I know this isn’t really your thing, but testing laundry detergents would be REALLY helpful. Perhaps use shop towels for the test?

  • Dicky Ball

    Dicky Ball

     6 days ago

    Project Farms is the best.

  • Tu Tone

    Tu Tone

     6 days ago

    I think the ultimate test is to. Find fat [email protected] on the flex seal commercial and force him to repeat that bullsh!t shit cutting the boat in half and going into alligator infested water. If he refuses, HANG THE BASTARD! for false advertisement.

  • Stephen Gove

    Stephen Gove

     6 days ago

    I had a home made cooler that had started to leak between the foam sections. Called flex seal to find out if their product would damage the foam. Was told no won't damage the foam, WRONG. What was a small problem is now a major disaster as the flex seal ate up the foam like candy where it touched it. What could've been fixed is no longer fixable. Thanks flex seal.

  • Andrejs LV

    Andrejs LV

     6 days ago +3

    This channel should be called science farm. Your meticulousness is legendary and awe-inspiring

  • Tejas Waghmare

    Tejas Waghmare

     7 days ago

    Bakwaas! Product Hai..Koi Naa..Kharide...Paise Wasted😡👊

  • zac chambers

    zac chambers

     7 days ago

    It really shows your integrity that you explicitly showed the crack in the bucket and still went ahead and filled it with water anyway, just in case

  • Ciborium


     7 days ago +6

    Liking and commenting for the YouTube algorithm.

  • Dale Bowen

    Dale Bowen

     7 days ago

    In real world testing, done by me, I have used the rustoleum. My issue was a leaky roof on my van. It has done the job well. The roll on treatment would have been more prep.

  • Guy Zumpetta

    Guy Zumpetta

     7 days ago

    Flex Seal might or might not be the best. What's for sure is Phil Swift is totally obnoxious.

  • PeaceBy Jesus

    PeaceBy Jesus

     7 days ago

    I would think that for some hole repairs using Gorilla tape covered over with one of the products tested might work better. At least under 100F. Now if they would only make these adhesives into cheap hot glue sticks.

  • Superhero Invasion

    Superhero Invasion

     7 days ago

    When are people going to learn all these are rubbish don't waste your money can't get a new packet

  • Kumuk 99

    Kumuk 99

     7 days ago

    Don’t you have anything better to do?