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10 bestLiquid Head Gasket Sealerof December 2025

112M consumers helped this year.

1

BlueDevil Head Gasket Sealer - 32 ounce(38386)

BlueDevil Head Gasket Sealer - 32 ounce(38386)

BlueDevil Head Gasket Sealer - 32 ounce(38386)

BlueDevil Products

9.9

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2

Bar's Products Leak HG-1 Head Seal Blown Head Gasket Repair

Bar's Products Leak HG-1 Head Seal Blown Head Gasket Repair

Bar's Products Leak HG-1 Head Seal Blown Head Gasket Repair

Bar's Leaks

9.8

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3

K-SEAL Permanent COOLANT Leak Repair Liquid 236ml - Stop Radiator Leak, Head Gasket Repair,Block/Head Sealer-No Draining/No Flushing,for All Cars, Light Trucks, Heavy Trucks & Buses

K-SEAL Permanent COOLANT Leak Repair Liquid 236ml - Stop Radiator Leak, Head Gasket Repair,Block/Head Sealer-No Draining/No Flushing,for All Cars, Light Trucks, Heavy Trucks & Buses

K-SEAL Permanent COOLANT Leak Repair Liquid 236ml - Stop Radiator Leak, Head Gasket Repair,Block/Head Sealer-No Draining/No Flushing,for All Cars, Light Trucks, Heavy Trucks & Buses

K-Seal

9.6

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4

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

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

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

Permatex

9.4

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5

J B Weld 32329 Ultimate RTV Silicone Gasket Maker and Sealant (Black, 3 Oz)

J B Weld 32329 Ultimate RTV Silicone Gasket Maker and Sealant (Black, 3 Oz)

J B Weld 32329 Ultimate RTV Silicone Gasket Maker and Sealant (Black, 3 Oz)

J-B Weld

9.1

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6

Permatex 80011 Form-A-Gasket #2 Sealant, 11 oz.

Permatex 80011 Form-A-Gasket #2 Sealant, 11 oz.

Permatex 80011 Form-A-Gasket #2 Sealant, 11 oz.

Permatex

8.8

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7

Loctite 518 Gasketing Compound | For machined metal components with gaps up to 0.25 mm | 50 ml

Loctite 518 Gasketing Compound | For machined metal components with gaps up to 0.25 mm | 50 ml

Loctite 518 Gasketing Compound | For machined metal components with gaps up to 0.25 mm | 50 ml

Loctite

8.5

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8

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

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

Quartz

8.3

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9

Permatex 81630 Ultra Red High Temperature Gasket Maker 3 oz

Permatex 81630 Ultra Red High Temperature Gasket Maker 3 oz

Permatex 81630 Ultra Red High Temperature Gasket Maker 3 oz

Permatex

8.0

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10

Permatex 81878 Ultra Copper Maximum Temperature RTV Silicone Gasket Maker, 3 oz. Tube

Permatex 81878 Ultra Copper Maximum Temperature RTV Silicone Gasket Maker, 3 oz. Tube

Permatex 81878 Ultra Copper Maximum Temperature RTV Silicone Gasket Maker, 3 oz. Tube

Permatex

7.7

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