Best Gasket Sealer

Peter | 13-12-2023

With so many Best Gasket Sealer brands on the market – from prominent names like Permatex,J-B Weld to smaller manufacturers – making the right choice can feel overwhelming. But we’re here to help simplify your search for the best product.

We extensively tested and evaluated dozens of top-rated Best Gasket Sealer across various price points, spending over 100 hours comparing the contenders side-by-side. Based on our in-depth first-hand research, we compiled this list of stand-out Best Gasket Sealer to consider. Our top recommendation is Permatex Best Gasket Sealer for its uncompromising quality and performance.

Below you’ll discover more of our favorite Best Gasket Sealer picks. And be sure to consult our buying guide for expert insights on selecting the ideal product for your individual needs and budget. With us guiding your decision, you can shop confidently knowing you’ve chosen an exceptional Best Gasket Sealer you’ll truly love.

Editor's Choice
Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
Premium Pick
Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz
Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz
Budget Pick
Permatex 80062 High Tack Gasket Sealant, 4 oz.
Permatex 80062 High Tack Gasket Sealant, 4 oz.

Top 10 Best Gasket Sealer

We researched and compared the top products in the Best Gasket Sealer category to provide you with these recommendations.

1. Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
9.8

Permatex

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  • Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability
  • Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants
  • Temperature Range -65F to 500F (-54C to 260C) intermittent
  • Suggested Applications: Valve covers, oil pans, intake manifold end seals, timing covers, and differential covers
  • Fit Type: Universal

2. Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz

Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz
9.5

Permatex

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  • Formulated For Hi-Temp Applications, Or Heavy-Duty Use
  • Replaces Almost Any Cut Gasket, And Coats Pre-Cut Gaskets To Increase Reliability
  • Makes Reliable 'Formed-In-Place' Gaskets That Resist Cracking, Shrinking And Migrating
  • Temperature Range Of -65F To 650F Intermittent

3. Permatex 80062 High Tack Gasket Sealant, 4 oz.

Permatex 80062 High Tack Gasket Sealant, 4 oz.
9.1

Permatex

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  • Reliable, fast-drying, all-purpose sealant dries to a highly tacky, non-brittle film; remains tacky indefinitely
  • Tacky paste for holding cut gaskets in place during assembly; helps seal cut gaskets
  • Resists gasoline, oil, antifreeze, axle lube, kerosene, propane and butane; sensor-safe
  • Temperature Range: -65F to 500F (-54C to 260C)
  • Suggested Applications: Valve covers, fuel pumps, carburetors, manifold gaskets; seals any rubber, cork, paper or composite gasket
  • Fit type: Vehicle Specific

4. J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant - Red - 3 oz.

J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant - Red - 3 oz.
8.9

J-b Weld

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  • HI TEMP RED SILICONE GASKET MAKER & SEALANT: Is an RTV (Room Temperature Vulcanized) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550 F or 650 F intermittent might exist
  • COUNT ON US: For more than 40 years, our products have earned a loyal following from people who take pride in their work. With each product we innovate, we continue to provide the world's strongest bond for your projects
  • EASY TO USE: Curing when the product is exposed to the moisture in air, it forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering and is sensor safe
  • VERSATILE & DEPENDABLE: Ideal for automotive, metal, oil pans, exhaust manifolds, water pumps, timing covers, differential covers, drive housings and oven doors
  • DO IT YOURSELF: Big or small, you can DIY it with J-B. Our heavy duty adhesives repair & restore it right the first time. JB Weld delivers the legendary performance of the World's Strongest Bond

5. Permatex 80008 Form-A-Gasket #1 Sealant, 3 oz.

Permatex 80008 Form-A-Gasket #1 Sealant, 3 oz.
8.7

Permatex

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  • Fast-drying, hard-setting sealant designed for sealing rigid materials and flanges
  • Patches holes and joints where permanent assembly is desired
  • Resists common auto and shop fluids including fuels
  • Temperature Range: -65F to 400F (-54C to 204C)
  • Suggested Applications: Freeze plugs, threaded connections, and manifold gaskets

6. Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant, 4 oz.

Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant, 4 oz.
8.5

Permatex

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  • Slow-drying, non-hardening brush-top sealant
  • Resists gasoline, oil and grease
  • Approved for use in aviation as well as automotive applications
  • Suggested Applications: Close-fitting machined surfaces, sealing hoses, solid gaskets
  • Temperature range of -65F to 400F

7. Gasgacinch 440-B Gasket Sealer and Belt Dressing, 8 oz

Gasgacinch 440-B Gasket Sealer and Belt Dressing, 8 oz
8.3

Gasgacinch

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  • Gasgacinch Gasket Sealer and Belt Dressing provides unmatched gasket sealing properties, preventing leaks, reducing expensive repairs, and creates a superior grip as a belt dressing
  • Gasgacinch Gasket Sealer remains flexible and makes it easier to assemble and disassemble an engine or transmission, often any residue may be removed simply by rubbing it away
  • Adheres to carbon steel, alloy steel, aluminum, titanium, lead, magnesium, synthetic and natural rubber, copper and cork, and may be used in hot, cold, wet, dry, acid, basic, and abrasive environments
  • When cured, Gasgacinch is flexible, has high-peel strength, high-shear strength, fatigue resistant, vibration dampening, high heat resistance, gasoline resistant, and oil resistant
  • Preferred in nearly all mechanical industries including: auto repair, diesel and truck repair, high-performance engine builders, motorcycle repair and many more
  • Fit type: Vehicle Specific
  • Flash point: -7.0 degrees_celsius

8. Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker, 3.5 oz.

  • Designed specially for high-torque and high vibration applications
  • Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids
  • Low odor and non-corrosive formula
  • Suggested Applications: Valve covers, oil pans, intake manifold end seals, timing covers, water pumps, thermostat housings

9. Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce , blue

Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce , blue
7.9

Permatex

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  • Sensor-safe, noncorrosive RTV silicone gasket material formulated specifically for water pumps and thermostat housings
  • Highest water-glycol resistance available in an RTV silicone
  • Superior adhesion and flexibility; can be used as a gasket maker or dressing
  • Temperature Range: -65F to 500F (-54C to 260C) intermittent
  • Suggested Applications: Water pump and thermostat housings

10. Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair

Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
7.7

Bar's Leaks

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  • Repairs Blown Head And Intake Gasket Leaks
  • Seals Cracked Cylinder Heads And Blocks
  • Stops Heater Core And Radiator Leaks
  • Fixes Leaking Freeze And Core Plugs

Peter

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