DEI Form-A-Barrier 12in x 12in

Marsoni

M251S

$24.02

Get it in 3 business days with 1 day shipping. Friday, May 29

DEI Form-A-Barrier 12in x 12inForm A Barrier solves the problem of needing a light weight, formable shield to protect components from heat. Light weight, formable, rigid shield provides excellent thermal protection up to 1300F with minimal gap of 1 inch to heat source. Can be formed or bent by hand to conform to odd shapes. Mechanically fasten with pins, screws or bolts. Resistant to most automotive chemicals. Multiple applications include firewalls, interiors, engines and other

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We offer a 30-day return/exchange service after receiving.
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Edit: Still holding proper pressure at 2-months !!! Had a slow leak where my tire went from 44psi to ~18psi over 2-3 days… Dashboard light would let me know every few days that I had a tire problem and I would inflate the tire back up to 44psi… Anyway, I used this product and filled air back to 44 psi and it’s held the pressure for a month already !!!! Be sure to deflate tire to ~15 PSI before adding the product… it only took about 30 seconds to empty the container into my tire with the tire pressure low. Very happy with this product !!!

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Reviewed in the United States on April 6, 2026

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Kindle Customer

Draper, US

★★★★★ 5

Excellent stuff!

Style: 18oz

Used this on a Z-Trac with a flat and it fixed it and has held up for over 8 months.

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Reviewed in the United States on May 11, 2026

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John V. Green

Phoenix, US

★★★★★ 5

Greats stuff

Style: 14oz

Works super, has kept air steaycfor over 6 months, no leaks

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Reviewed in the United States on May 30, 2026

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Chris_9725

Phoenix, US

★★★★★ 4

Effective temporary fix

Style: 18oz, Style: 18oz

The slim brand has always been an genuine effective fix. I have been using slime since I used to ride on bicycles. Well it is not a permanent fix for if you have a hole in your inner tube it is a great fix to hold you over until you are able to get to either the mechanic or to your local store to get a replacement inner tube. Overall, it's worth every penny and you get plenty in the canister that it comes in depending on which slime you are getting whether that's the plastic bottle for your inner tubes for a bicycle or the metal canister as I've shown in my picture for your SUVs trucks or vans. However I don't give this an entire five stars but more of four stars not because of their product but because resorting to using slime rather than fixing the problem is more of my own problem. ⭐⭐⭐⭐ 👍👍

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Reviewed in the United States on February 25, 2024

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Chara P.

Port Orchard, US

★★★★★ 1

Don't buy doesn't work

Style: 18oz, Style: 18oz

Terrible did nothing. Even tried to let wheel turn 360 degrees yet the solution get in the tire leak proper. Directions on can differ from instructions on here/Amazon. I followed directions on can EXACTLY and still didnt even hold one PSI of air. I'd be better off burning the $10 for warmth rather then waste it this way

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Reviewed in the United States on May 25, 2026