--- title: "gas tank sealer — Niche Verdict: Skip it (46/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/gas-tank-sealer" last_updated: "2026-07-10T02:50:18.576Z" locale: en meta: description: "a small market ($329K/yr) — gas tank sealer doesn't clear our bar today." "og:description": "a small market ($329K/yr) — gas tank sealer doesn't clear our bar today." "og:title": "gas tank sealer — Niche Verdict: Skip it (46/100) | Amazon United States - Flapen" --- Back to Flapen home # **gas tank sealer** **Skip it****46/100 ** a small market ($329K/yr) — gas tank sealer doesn't clear our bar today. **Market/yr** **$329K** **Growth (1y)** **+114.5%** **Products** **18** **Brands** **7** was 8 a year ago **Sellers** **30** **Price range** **$9.01–$108.88** **Returns** **0.1%** **Rating** **4.5★** **Skip it** Scored 46/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **16** ×0.30 Growth **67** ×0.30 Competition **36** ×0.20 Quality gap **36** ×0.10 Returns **99** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +114.5% year over year. 4K2KSpike '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND No pronounced peak months · busiest ÷ quietest = 1.4× ## **Competition** - KBS Coatings45% - POR-1537% - KCINT9% - Kreem4% - Eastwood2% - Caswell1% - Other (1 brands)1% The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them. 7 brands and 30 sellers compete here. **Brands** **7 **▼falling was 8 a year ago **Sellers** **30** **Top 5 brand share** **97%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Resistant to All Fuels Alcohols and Additives 8 Fluid Ounces](https://m.media-amazon.com/images/I/510Fk5+VahL.jpg) [**POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Resistant to All Fuels Alcohols and Additives 8 Fluid Ounces**](https://www.amazon.com/dp/B00B3HXCZ4) POR-15$24.774.5★4,32123%▼falling 2 ![KBS Coatings 52000 Cycle Tank Sealer Kit Complete Kit - Seals Up To 5 Gallon Tank Lightly Pigmented Silver](https://m.media-amazon.com/images/I/51Bofr+w0-L.jpg) [**KBS Coatings 52000 Cycle Tank Sealer Kit Complete Kit - Seals Up To 5 Gallon Tank Lightly Pigmented Silver**](https://www.amazon.com/dp/B000IBDIX2) KBS Coatings$45.994.6★1,54013%▲rising 3 ![KBS Coatings 5200 Gold Standard Tank Sealer - 8 fl. oz. Silver](https://m.media-amazon.com/images/I/61qVA0iCePL.jpg) [**KBS Coatings 5200 Gold Standard Tank Sealer - 8 fl. oz. Silver**](https://www.amazon.com/dp/B00DMIDUUY) KBS Coatings$20.594.6★39610%▲rising 4 ![POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Seals Pinholes and Seams Non-Porous Flexible Film 16 Ounces](https://m.media-amazon.com/images/I/51xgv6rsY1S.jpg) [**POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Seals Pinholes and Seams Non-Porous Flexible Film 16 Ounces**](https://www.amazon.com/dp/B00B3I2NWG) POR-15$39.524.6★1,59710%▼falling 5 ![RED KOTE FUEL TANK LINER GAS TANK SEALER FUEL TANK SEALER 1 QT. STOPS RUST CORROSION AND LEAKS](https://m.media-amazon.com/images/I/4154My-Cs+L.jpg) [**RED KOTE FUEL TANK LINER GAS TANK SEALER FUEL TANK SEALER 1 QT. STOPS RUST CORROSION AND LEAKS**](https://www.amazon.com/dp/B0DZQ3STVQ) KCINT$64.724.7★669%▲rising 6 ![KBS Coatings 4401 Gloss Black RustSeal - 1 Quart Covers 50 sq ft Proven Rust Prevention](https://m.media-amazon.com/images/I/51P66YKWUGL.jpg) [**KBS Coatings 4401 Gloss Black RustSeal - 1 Quart Covers 50 sq ft Proven Rust Prevention**](https://www.amazon.com/dp/B000I7VWI4) KBS Coatings$43.184.4★7506%▲rising 7 ![POR-15 49204 Fuel Tank Sealer 32 fl oz](https://m.media-amazon.com/images/I/51IMLKTzf6L.jpg) [**POR-15 49204 Fuel Tank Sealer 32 fl oz**](https://www.amazon.com/dp/B00J594AEY) POR-15$67.364.5★4,3214%▲rising 8 ![KBS Coatings 53000 Auto Fuel Tank Sealer Kit Seals Up to 25 Gallon Tank](https://m.media-amazon.com/images/I/51XgNOJOxXL.jpg) [**KBS Coatings 53000 Auto Fuel Tank Sealer Kit Seals Up to 25 Gallon Tank**](https://www.amazon.com/dp/B000IBEOQ2) KBS Coatings$69.864.6★5704%—flat 9 ![KBS Coatings 52050 Large Cycle Tank Sealer Kit Seals Up to 12 Gallon Tank](https://m.media-amazon.com/images/I/51PnhOg7CWL.jpg) [**KBS Coatings 52050 Large Cycle Tank Sealer Kit Seals Up to 12 Gallon Tank**](https://www.amazon.com/dp/B000M7RAUE) KBS Coatings$51.514.6★3924%—flat 10 ![KBS Coatings 5300 Gold Standard Tank Sealer - 1 Pint](https://m.media-amazon.com/images/I/51rGgG408PL.jpg) [**KBS Coatings 5300 Gold Standard Tank Sealer - 1 Pint**](https://www.amazon.com/dp/B00UDIZDRE) KBS Coatings$33.214.5★4513%▲rising 11 ![Kreem Products 19-103 Fuel Tank Liner Combo Pack 3 Pack Black One Size](https://m.media-amazon.com/images/I/41b8G9yZajL.jpg) [**Kreem Products 19-103 Fuel Tank Liner Combo Pack 3 Pack Black One Size**](https://www.amazon.com/dp/B0844JF5MD) Kreem$42.534.5★5613%▼falling 12 ![KBS Coatings 5400 Gold Standard Tank Sealer - 1 Quart](https://m.media-amazon.com/images/I/51w6CLPmutL.jpg) [**KBS Coatings 5400 Gold Standard Tank Sealer - 1 Quart**](https://www.amazon.com/dp/B00DMIEG9S) KBS Coatings$49.264.5★4512%—flat 13 ![Eastwood Steel Aluminum Fiberglass Gas Diesel Tank Motorcycles Sealer Kit](https://m.media-amazon.com/images/I/41HdASkhagL.jpg) [**Eastwood Steel Aluminum Fiberglass Gas Diesel Tank Motorcycles Sealer Kit**](https://www.amazon.com/dp/B00GA7O7H4) Eastwood$23.924.3★1392%▼falling 14 ![CASWELL SEALER CONCENTRATE - QT](https://m.media-amazon.com/images/I/31qRWnDUkTL.jpg) [**CASWELL SEALER CONCENTRATE - QT**](https://www.amazon.com/dp/B09MR73ZKT) Caswell$69.200.0★01%▲rising 15 ![Hzutloer 2.87oz(85g) Instant Fuel & Water Tank Repair Adhesive Kit-Waterproof High-Temp Resistant for Cars Motorcycles Trucks Solar Heaters-Fast Bonding No Leakage Easy DlY Fix](https://m.media-amazon.com/images/I/41usrHhPj+L.jpg) [**Hzutloer 2.87oz(85g) Instant Fuel & Water Tank Repair Adhesive Kit-Waterproof High-Temp Resistant for Cars Motorcycles Trucks Solar Heaters-Fast Bonding No Leakage Easy DlY Fix**](https://www.amazon.com/dp/B0DM8RG8QP) Hzutloer$9.014.4★861%—flat **~~Showing 15 of 18 — show all ~~** ## **Product shelf** All 18 tracked products in this niche. Top sellersNewestTrending [![POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Resistant to All Fuels Alcohols and Additives 8 Fluid Ounces](https://m.media-amazon.com/images/I/510Fk5+VahL.jpg)**POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Resistant to All Fuels Alcohols and Additives 8 Fluid Ounces** POR-15**$24.77**4.5★4,321 reviews](https://www.amazon.com/dp/B00B3HXCZ4) [![KBS Coatings 52000 Cycle Tank Sealer Kit Complete Kit - Seals Up To 5 Gallon Tank Lightly Pigmented Silver](https://m.media-amazon.com/images/I/51Bofr+w0-L.jpg)**KBS Coatings 52000 Cycle Tank Sealer Kit Complete Kit - Seals Up To 5 Gallon Tank Lightly Pigmented Silver** KBS Coatings**$45.99**4.6★1,540 reviews](https://www.amazon.com/dp/B000IBDIX2) [![KBS Coatings 5200 Gold Standard Tank Sealer - 8 fl. oz. Silver](https://m.media-amazon.com/images/I/61qVA0iCePL.jpg)**KBS Coatings 5200 Gold Standard Tank Sealer - 8 fl. oz. Silver** KBS Coatings**$20.59**4.6★396 reviews](https://www.amazon.com/dp/B00DMIDUUY) [![POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Seals Pinholes and Seams Non-Porous Flexible Film 16 Ounces](https://m.media-amazon.com/images/I/51xgv6rsY1S.jpg)**POR-15 Fuel Tank Sealer Stops Rust Corrosion and Leaks Seals Pinholes and Seams Non-Porous Flexible Film 16 Ounces** POR-15**$39.52**4.6★1,597 reviews](https://www.amazon.com/dp/B00B3I2NWG) [![RED KOTE FUEL TANK LINER GAS TANK SEALER FUEL TANK SEALER 1 QT. STOPS RUST CORROSION AND LEAKS](https://m.media-amazon.com/images/I/4154My-Cs+L.jpg)**RED KOTE FUEL TANK LINER GAS TANK SEALER FUEL TANK SEALER 1 QT. STOPS RUST CORROSION AND LEAKS** KCINT**$64.72**4.7★66 reviews](https://www.amazon.com/dp/B0DZQ3STVQ) [![KBS Coatings 4401 Gloss Black RustSeal - 1 Quart Covers 50 sq ft Proven Rust Prevention](https://m.media-amazon.com/images/I/51P66YKWUGL.jpg)**KBS Coatings 4401 Gloss Black RustSeal - 1 Quart Covers 50 sq ft Proven Rust Prevention** KBS Coatings**$43.18**4.4★750 reviews](https://www.amazon.com/dp/B000I7VWI4) [![POR-15 49204 Fuel Tank Sealer 32 fl oz](https://m.media-amazon.com/images/I/51IMLKTzf6L.jpg)**POR-15 49204 Fuel Tank Sealer 32 fl oz** POR-15**$67.36**4.5★4,321 reviews](https://www.amazon.com/dp/B00J594AEY) [![KBS Coatings 53000 Auto Fuel Tank Sealer Kit Seals Up to 25 Gallon Tank](https://m.media-amazon.com/images/I/51XgNOJOxXL.jpg)**KBS Coatings 53000 Auto Fuel Tank Sealer Kit Seals Up to 25 Gallon Tank** KBS Coatings**$69.86**4.6★570 reviews](https://www.amazon.com/dp/B000IBEOQ2) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Quality-Overall**18% *“Really good product worked perfect on my gas tank it makes it look”* **Advertised Vs Actual Product**11% *“Works as stated it should”* **Efficiency**11% *“Works well and holds up well”* **Instructions/User Manual/Troubleshooting**8% *“easy to read instructions if you go to their website”* **Paint Quality**6% *“Great coating”* **Rusts/Corrodes**6% *“Works clean out rust good REALLY GOOD preparation is a must spend EXTRA time on cleaning use extra rust remover before Por 15 metal prep”* **Value For Money**5% *“good value for the money”* **Ease Of Use**5% *“Easy to use”* **Durability**4% *“THIS STUFF WORKS GREAT HAVE USED FOR A MANY OF YEARS IT'S GREAT”* **Maintenance And Repair**4% *“Quick easy fix”* ### **What buyers complain about ** **Leak-Proof**17% *“Caused it to leak”* **Rusts/Corrodes**13% *“I found red rust particles everywhere”* **Adhesion/Stickiness**7% *“Doesn't stay adhered”* **Ease Of Use**7% *“not being easy to use”* **Value For Money**7% *“too expensive”* **Ease Of Cleaning**5% *“If you do not clean the area perfectly probably will not work”* **Assembly/Installation**4% *“Never Set UP”* **Paint Quality**4% *“the one I put it in did not seal it all the way ended up having leaking issues which destroyed my new paint job”* **Functionality-Overall**3% *“Didnt work”* **Durability**3% *“it will only last a few weeks”* #### **Top return reasons**- Compatibility-Overall14% - Maintenance And Repair14% - Material Quality14% - Advertised Vs Actual Product12% - Defective Material/Parts11% - Ease Of Use9% - Functionality-Overall8% - Adhesion/Stickiness5% - Instructions/User Manual/Troubleshooting4% - Metal Quality3%