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      Why buy from Lowbrow?

      • Free Shipping On US Orders $99 & up*

      • Everything In Stock & Ships Fast!

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      • 90 Day Money Back Guarantee

      • No Restock Fees, Ever!

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      LOWBROW CUSTOMS USA MANUFACTURING SCHOLARSHIPS

      Here at Lowbrow Customs we believe strongly in supporting US manufacturing. We have created multiple annual scholarships, one with the Lincoln Electric Welding School and another with Tri-C (Cuyahoga Community College) for students in financial need who are pursuing workforce training. From TIG welding to machining, this is the backbone of manufacturing in the United States. Want to learn more?

      Want to learn more? Click here.

      Customer Reviews
      4.9 Based on 21 Reviews
      5 ★
      90% 
      19
      4 ★
      10% 
      2
      3 ★
      0% 
      0
      2 ★
      0% 
      0
      1 ★
      0% 
      0
      Customer Photos
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      Filter Reviews:
      • stuff
      • tank
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      • tank sealers
      • gas leak
      • Blow dryer
      • directions
      • results
      • consumption
      A Lowbrow Customs Customer
      AL
      10/08/2021
      Alex L.
      United States United States
      I recommend this product

      Caswell Sealer

      Easy to use, good stuff.

      JK
      06/05/2021
      Jon K.
      United States United States
      I recommend this product

      Tank sealer

      So far so good . I haven't used it yet but it arrived in a timely manner.

      TK
      06/03/2021
      Tim K.
      United States United States

      Great product, price, and availability!

      Great product! And it was available here when sold out everywhere else! Caswell site says not available until mid July.

      JK
      05/22/2021
      john k.
      United States United States
      I recommend this product

      Caswell

      Great usually buy straight from caswell but they are out of stock untill July so came here never had a problem with. Caswell tank sealer best out there

      SS
      04/20/2021
      Sean S.
      United States United States
      I recommend this product

      Survey

      Followed the directions for applying the sealer and Everything turned out perfect !

      MB
      04/03/2021
      Mathew B.
      United States United States
      I recommend this product

      Ease of Use

      Compared to some other tank sealers out there, this product seems like it will be simple to use. Cost is reasonable compared to going with a new tank. Waiting for the right weather conditions to try it out, but I expect good things. As usual, super fast shipping, thanks lowbrow!

      CP
      03/27/2021
      Charles P.
      United States United States
      I recommend this product

      Love it

      My tank was JUST painted. I noticed a gas leak and it really ****** me off. I got this stuff and it’s sealed up nice and tight. I highly recommend it

      HC
      03/10/2021
      Harry C.
      United States United States
      I recommend this product

      Casewell tank sealer

      The stuff is great. Simple , easy to use, no big mess.I’ve used it on three different old fiberglass Bultaco gas tanks with good results .

      WK
      10/20/2020
      Walter K.
      United States United States

      Don't use any other sealer

      Easy to use. Blow dryer plenty effective to use post pre rinse before pouring.

      Lowbrow Customs Caswell Gas Tank Liner / Sealer Kit for Gas Fuel Petrol Oil Review
      DS
      04/13/2020
      Dusty S.
      United States United States
      I recommend this product

      tank sealer

      Compared to other products that I have used in the past... great. Actually easy to use... some time consumption but gives the best results. Have even used on a few "cancerous" tanks... not recommended... but worked.

      JH
      02/01/2020
      Josh H.
      US

      Great sealer

      Super rad shipping, and as always wonderful customer support from lowbrow. The sealant works great but I will admit the instructions leave a bit to be desired, and I think that using this product might be a bit daunting for first time users.

      RC
      12/23/2019
      Rick C.
      US

      tank sealer

      Caswell works great, the only tank sealer to use.

      NG
      09/03/2019
      Nathan G.
      US

      Awsome

      I used this for the bike and a small generator, had muriatic acid already to clean the tanks out mixed it up made sure to get the inside covered evenly and let cure, it did what it's suppose to do

      MS
      08/24/2019
      Michael S.
      US

      easy to use...works great...

      easy to use...works great...

      MS
      08/24/2019
      Michael S.
      US

      works great..easy to use...nice....

      works great..easy to use...nice....