14 Best Valve Cover Gasket Sealants for a Perfect Seal

Discover the best valve cover gasket sealant to ensure a leak-free engine. Your guide to top choices for lasting performance and reliability.
14 Best Valve Cover Gasket Sealants for a Perfect Seal

Top Quick Picks For You

Best Low-Cost Alternative

Permatex Silicone Sealant

Permatex Silicone Sealant

Permatex 81158 Black Silicone Adhesive Sealant provides a strong seal at a competitive price, making it the most cost-effective option.

Best for High Temperature Performance

Permatex Ultra Red Gasket Maker

Permatex Ultra Red Gasket Maker

Permatex 81630 Ultra Red High Temperature Gasket Maker withstands temperatures up to 650°F, making it ideal for high-heat applications.

Best for Long Lasting Seal

Permatex Ultra Grey Gasket Maker

Permatex Ultra Grey Gasket Maker

Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker provides a durable and long-lasting seal, resistant to aging and thermal cycling.

Best for Easy Application

Permatex High Tack Gasket Sealant

Permatex High Tack Gasket Sealant

Permatex 80062 High Tack Gasket Sealant features a reliable and fast-drying formula that simplifies the application process while holding cut gaskets in place.

Best Valve Cover Gasket Sealant

When it comes to maintaining your vehicle's engine health, the valve cover gasket might not steal the spotlight, but it plays a starring role in preventing leaks and ensuring optimal performance. Choosing the right gasket sealant is essential for a successful seal that withstands the test of time and temperature. Dive into our guide to discover the best options that promise to keep your engine running smoothly and efficiently, all while keeping your repair experience quick and hassle-free.

Best Low-Cost Alternative: Permatex Silicone Sealant

Permatex 81158 Black Silicone Adhesive Sealant, 3 oz. Tube, Pack of 1
GoodNot So Good
Professional formulaCan be messy
Waterproof and flexibleMay clog tube
Multipurpose applicationNot for engine gaskets

When it comes to securing a reliable seal without breaking the bank, Permatex 81158 Black Silicone Adhesive Sealant stands out as our Best Low-Cost Alternative !

This professional-grade sealant is sensor-safe and boasts versatile capabilities — from bonding glass to mending weather stripping .

Its waterproof and flexible formula ensures it can withstand the elements, making it an ideal choice for both indoor and outdoor projects .

However, be cautious as it can get a bit messy, and its tube may clog if not stored properly .

Overall, for a powerful, multipurpose sealant at a competitive price, this is a top pick!

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Price history for Permatex Silicone Sealant on Amazon

Best for High Temperature Performance: Permatex Ultra Red Gasket Maker

Permatex 81630 Ultra Red High Temperature Gasket Maker, 3 oz
GoodNot So Good
High temperature performanceAvailability may vary
Sensor-safe and non-toxicLimited size options
Cost-effective and reliablePrice discrepancies observed

When it comes to high-temperature applications, Permatex 81630 Ultra Red High Temperature Gasket Maker truly stands out in our review !

With the ability to withstand impressive temps up to 650°F, this gasket maker ensures your engine stays sealed tight during the heat of the action .

We appreciate its flexibility and adhesion, making it not only a reliable choice but also an OEM-specified product that’s sensor-safe and non-toxic .

While availability might be a slight concern, its cost-effectiveness and performance make it a top contender .

It’s a simple solution that brings powerful results—ideal for all your gasket needs!

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Price history for Permatex Ultra Red Gasket Maker on Amazon

Best for Long Lasting Seal: Permatex Ultra Grey Gasket Maker

Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Torque And Vibration Resistant Applications, 3 oz
GoodNot So Good
High performance formulaDiscontinued by manufacturer
Vibration resistantRequires correct color usage
Long-lasting durabilityLimited to specific applications

When it comes to finding the best valve cover gasket sealant, we can’t help but rave about Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker .

It's our pick for the "Best for Long Lasting Seal," and for good reason .

This high-performance formula creates a durable, long-lasting seal that laughs in the face of aging and thermal cycling .

Its sensor-safe, non-corrosive nature makes it a versatile friend for any mechanical assembly .

Plus, the impressive vibration resistance ensures it holds strong even under pressure .

With a temperature range of -65°F to 500°F, you’re set for the long haul!

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Price history for Permatex Ultra Grey Gasket Maker on Amazon

Best for Easy Application: Permatex High Tack Gasket Sealant

Permatex 80062 High Tack Gasket Sealant, 4 oz.
GoodNot So Good
Reliable and durableMay remain tacky indefinitely
Fast-drying formulaLimited to vehicle specific fit
Tacky for easy assemblyNot suitable for all gaskets

When it comes to simplifying our gasket assembly process, Permatex 80062 High Tack Gasket Sealant has truly earned its place as our pick for “Best for Easy Application.” Its fast-drying, all-purpose formula works wonders by holding cut gaskets in place with its tacky paste, making everything seamless .

We appreciate that it resists a cocktail of fluids—gasoline, oil, and more—so you can tackle a range of repairs confidently .

Just be mindful that while it remains tacky indefinitely, it’s primarily designed for vehicle-specific fitment .

If you’re looking for reliability and ease, this sealant is our go-to!

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Price history for Permatex High Tack Gasket Sealant on Amazon

Permatex Ultra Black

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Flex And Oil Resistant Applications 3 oz
GoodNot So Good
Non-corrosive formulaCan be difficult to remove
Superior oil resistanceNot specifically for plastic
High flexibilityRequires proper curing time

When it comes to finding the best valve cover gasket sealant, we can't help but rave about Permatex's Ultra Black Maximum Oil Resistance Silicone Gasket Maker .

This product boasts a non-corrosive formula that adheres beautifully to oily surfaces, ensuring a strong, long-lasting seal .

Its ability to resist engine oil, transmission fluid, and coolant gives us confidence in its durability .

We appreciate the high flexibility of this sealant, allowing it to adapt to various applications like valve covers and oil pans .

While it might be a bit tricky to remove and requires a proper curing time, the benefits far outweigh these minor inconveniences .

For those who want reliability, this is definitely a contender!

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Price history for Permatex Ultra Black on Amazon

Permatex Ultra Black RTV

Permatex 82180 Ultra Black RTV Silicone Gasket Maker
GoodNot So Good
High flexibilityRequires precise application
Oil resistantDries quickly
Sensor-safe formulaNot suitable for all materials

When it comes to choosing a valve cover gasket sealant, Permatex 82180 stands out with its impressive features .

Its high flexibility and oil resistance make it a reliable choice for various applications, while the sensor-safe formula is a bonus for those concerned about corrosion .

This sealant eliminates the hassle of pre-formed gaskets, simplifying your installation process .

With an OEM approval for dealership warranty requirements, you can tackle repairs with confidence .

Just keep in mind that achieving the perfect application is key, as it dries quickly .

Overall, it's a solid pick for any DIY enthusiast or professional mechanic!

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Price history for Permatex Ultra Black RTV on Amazon

J-B Weld RTV Silicone Valve Cover Gasket Sealant

J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant - Red - 3 oz.
GoodNot So Good
High temperature resistanceRequires moisture to cure
Easy applicationMay not adhere to all materials
Durable waterproof sealLong curing time

When it comes to tackling high-temperature projects, we can't help but sing the praises of HI TEMP RED SILICONE GASKET MAKER & SEALANT .

This RTV silicone is our go-to for creating tough, waterproof seals that withstand a blistering 550º F, and even intermittent spikes up to 650º F !

What we appreciate most is its easy application, curing as soon as it encounters moisture in the air .

Plus, it doesn’t shrink or crack, ensuring a reliable and durable seal .

While it may not bond perfectly to every material and has a long curing time, the performance is truly legendary .

If you're looking for versatility and dependability, this sealant is definitely worth considering.

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Price history for J-B Weld RTV Silicone on Amazon

Victor Reinz RTV Silicone

Victor Reinz 70-31414-10 Reinzosil RTV Silicone - 70 ml Tube
GoodNot So Good
Universal compatibilityNot vehicle-specific
High temperature resistanceLong curing time
Excellent fluid resistanceRequires careful application

If you're on the hunt for the best valve cover gasket sealant, look no further !

We discovered that the Victor Reinz gasket sealant is a fantastic choice for any building or maintenance project .

Its universal compatibility means you won’t have to worry about finding the perfect match for your vehicle .

We love its impressive temperature resistance, allowing it to handle extremes from -58°F to 482°F, and even briefly up to 608°F !

Plus, it boasts excellent fluid resistance, making it dependable against oils and greases .

Just a heads-up, its longer curing time means patience is key, but the results are definitely worth it!

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Price history for Victor Reinz RTV Silicone on Amazon

Akfix HT300

Akfix HT300 High Temp Silicone Gasket Maker (2x10.1 fl.oz.) - Red RTV Gasket Sealer, Flexible High Heat Silicone Sealant Up to 600F, Valve Cover Gasket Sealant for Automotive | 2 Pack
GoodNot So Good
High heat resistanceCan be messy
Durable and strongRequires careful application
Flexible and long-lastingThinner consistency than expected

When it comes to choosing a gasket sealant, we highly recommend the Akfix HT300 for your next project .

With an impressive heat resistance of up to 482°F, it’s perfect for those high-temperature applications .

Its flexibility and strength make it a favorite among both DIYers and professionals, ensuring it won't crack or become brittle over time .

While it may be a bit messy during application and has a thinner consistency than some might expect, the durability and waterproof performance it offers are well worth it .

For sealing gaskets in engines or stoves, Akfix HT300 is definitely a top contender!

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Price history for Akfix HT300 on Amazon

ABRO RTV Sealant Valve Cover Gasket Sealant

ABRO RTV Silicone Sealant and Gasket Maker: Up to 500 Degree F Heat, High Temp Silicone Sealant/Head Gasket Sealant, 3 oz/85g Tube - Black
GoodNot So Good
Industrial strength sealantRequires proper surface prep
Fast curing formulaCuring time varies
Highly resistant to chemicalsMay not bond well to all materials

When it comes to sealing, ABRO's RTV Gasket Maker truly stands out as a top contender .

We love its industrial strength—this stuff is built to withstand the rough and tumble of heavy-duty applications !

Its fast-curing formula is a game changer, allowing us to whip up tough, leak-proof gaskets in no time .

Plus, it’s flexible and can resist temperatures up to 500°F and a variety of liquids, making it perfect for valve covers and more .

Just remember, proper surface prep is key .

Overall, it’s a reliable sealant that easily deserves a spot in your toolkit!

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Price history for ABRO RTV Sealant on Amazon

ABRO Ultra Plus 999

ABRO Ultra Plus 999 RTV Silicone Sealant and Gasket Maker, for Import Engines, Sensor Safe, Non-Corrosive, High Temp Silicone Sealant/Head Gasket Sealant, 650 Degrees F, 3 oz. Tube - Black
GoodNot So Good
High temperature resistanceTakes 24 hours to fully cure
Cures quicklyRequires careful application
Multifunctional applicationsLimited to metal compatibility

When it comes to finding a reliable valve cover gasket sealant, we can’t help but sing the praises of ABRO's silicone gasket maker .

This industrial-strength RTV sealant is built to tackle the tough conditions of automotive and industrial applications .

With its high-temperature resistance, it can withstand up to 650°F (343°C), proving its durability .

What we love most is its fast-curing formula that quickly forms leak-proof gaskets, making any job smoother .

While it does require 24 hours to fully cure, its ability to resist oil and water is truly impressive .

Just remember, it’s a metal-only companion, so use it wisely!

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Price history for ABRO Ultra Plus 999 on Amazon

Bar's Leaks

Bar's Leaks OS-1 Seal Engine Oil Burning/Leak Repair - 16.9 oz.
GoodNot So Good
Reduces oil consumptionRequires frequent application
Works on various enginesMay not fix all leaks
Effective for older vehiclesMixed results reported

When it comes to tackling those pesky oil leaks, we’re all in for Bar’s Leaks Oil Seal Engine Oil Burning & Leak Repair .

This product shines with its ability to repair and renew valve seals across a wide range of vehicles—from everyday cars to turbocharged engines .

We love that it’s versatile enough to handle performance beasts and everyday machines alike !

While it may require frequent applications and mixed results have been reported, its effectiveness in reducing oil consumption and stopping that annoying blue exhaust smoke is hard to overlook .

Plus, it’s proudly made in the USA !

If your vehicle isn’t guzzling more than a quart of oil daily, this can be a game changer.

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Price history for Bar's Leaks on Amazon

Permatex Valve Cover Gasket Sealant

Permatex 80008 Form-A-Gasket #1 Sealant, 3 oz.
GoodNot So Good
Fast-dryingNon-hardening option preferred
Resists common fluidsLimited temperature range
Easy to useMay need multiple applications

When it comes to sealing applications, Permatex’s Form-A-Gasket #1 Sealant stands out for its fast-drying and hard-setting properties .

We were impressed by how easily it patched holes and joints, making it a smart choice when permanent assembly is needed .

This sealant thrives in demanding environments, as it resists common fluids like fuels and operates effectively in temperatures ranging from -65°F to 400°F .

While some may prefer a non-hardening alternative and find it requires a few coats for optimal results, we appreciate its simplicity and effectiveness .

For any auto or shop use, this sealant is definitely a contender!

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Price history for Permatex on Amazon

Toyota Oil Pan Gasket

Toyota Genuine Fluid 00295-00103 Formed-in-Place Oil Pan Gasket - 3 oz. Tube
GoodNot So Good
Elastic body resists vibrationLimited to specific applications
Stable over wide temperaturesRequires careful surface preparation
Highly chemical resistantCuring time needed before use

When it comes to valve cover gasket sealants, the Toyota 00295-00103 stands out for its impressive performance .

We appreciate how it sets to form an elastic body that holds up against vibration and impact, ensuring a lasting seal .

With a remarkable operating temperature range from -76°F to 482°F, it's engineered to withstand the toughest conditions .

Its high resistance to engine oil and various chemicals makes it versatile for applications like oil pans and water pumps .

Although it requires careful surface preparation and a bit of curing time, the five-minute tack-free feature makes initial application a breeze .

This sealant truly rises to the occasion!

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Price history for Toyota Oil Pan Gasket on Amazon

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