10 Best Liquid Gasket Sealers

Last Updated January 2020 Based on 3041 Reviews
1 Best of the Best!
Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
Permatex Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
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9.8 Greet
Product Highlights
  • 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
  • Retains high flexibility and eliminates the need for pre-formed, pre-cut, paper, rubber or cork gaskets; OEM specified and approved for dealership warranty requirements
  • Temperature Range -65°F to 500°F (-54°C to 260°C) intermittent
  • Suggested Applications: Valve covers, oil pans, intake manifold end seals, timing covers, and differential covers
2
Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz
Permatex Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz
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9.5 Greet
Product Highlights
  • 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
  • Suggested Applications: Valve covers, oil pans, timing covers, water pumps, thermostat housings, transmission pans
3
Hondabond High-Temp Silicone Liquid Gasket 1.9 fl oz
Honda Hondabond High-Temp Silicone Liquid Gasket 1.9 fl oz
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9.1 Greet
Product Highlights
  • 1.9 fl oz
  • High-Temp formula is good up to 600 degress farenheit
  • For use in areas not requiring a solid gasket, such as cylinder head covers
  • Dries quickly, remains flexible, resists vibration
  • Resists oil, water, and most chemicals
4
Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
Bar's Leaks Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
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8.7 Very good
Product Highlights
  • 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
5
Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant, 4 oz.
Permatex Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant, 4 oz.
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8.5 Very good
Product Highlights
  • 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
6
Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker, 3.5 oz.
Permatex Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker, 3.5 oz.
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8.2 Very good
Product Highlights
  • Designed specially for high-torque and high vibration applications
  • Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids
  • OEM specified, guaranteed not to leak
  • Low odor and non-corrosive formula
  • Suggested Applications: Valve covers, oil pans, intake manifold end seals, timing covers, water pumps, thermostat housings
7
Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant
Refrigeration Technologies Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant
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8 Very good
Product Highlights
  • Refrigeration Technologies
  • Nylog-gasket/thread sealant
8
Permatex 27036 Fluidounces Optimum Grey Gasket Maker 3.35 oz, 3.35 Fluid_Ounces
Permatex Permatex 27036 Fluidounces Optimum Grey Gasket Maker 3.35 oz, 3.35 Fluid_Ounces
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7.6 Good
Product Highlights
  • Sensor-safe, low odor, and non-corrosive.
  • Maximum vibration resistance, with outstanding resistance to oils, cooling fluids, and shop fluids. 15% more flexible than Ultra grey.
  • Maximum temperature resistance: -65F to 700f(-54 DegreeC to 371 DegreeC) intermittent. 40% higher Temp. Than Ultra grey.
  • The most Advanced, high Temp RTV silicone gasket maker Available.
  • Includes 2 nozzles.
9
Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce
Permatex Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce
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7.3 Good
Product Highlights
  • 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: -65°F to 500°F (-54°C to 260°C) intermittent
  • Suggested Applications: Water pump and thermostat housings
10
BlueDevil Head Gasket Sealer (38386)
BlueDevil Products BlueDevil Head Gasket Sealer (38386)
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7.1 Good
Product Highlights
  • Contains no solid or particulate matter that can harm a vehicles engine 
  • Alternative solution for costly and time consuming repairs 
  • Safe and easy to use
  • Permanent Repair

Releted Reviews

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  • 3 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