Top 10 RTV Sealant High Temp – Gasket Sealers

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1. Permatex

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

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Permatex #ad - Suggested applications: Valve covers, timing covers, oil pans, thermostat housings, water pumps, transmission pans. Temperature range of -65F to 650F intermittent. Replaces almost any cut gasket, and coats pre-cut gaskets to increase reliability. Formulated for hi-temp applications, or heavy-duty use. Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.2 Pounds
Width3.81 Inches
Part Number81160
Model81160
WarrantyLimited Manufacturer

2. J-B Weld

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10.3 oz., J-B Weld 31914 Red High Temperature RTV Silicone Gasket Maker and Sealant

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J-B Weld #ad - Versatile & dependable: ideal for automotive, oil pans, water pumps, differential covers, metal, exhaust manifolds, timing covers, drive housings and oven doors. Choose the product pros trust for your project.

Do it yourself: big or small, you can diy it with j-b. Hi temp silicone gasket maker & sealant: is an rtv silicone gasketing material, designed for use in mechanical assemblies where continuous temperatures up to 550º F or 650º F intermittent exist. Our heavy duty adhesives repair & restore it right the first time. It will not shrink or crack, it forms a tough, resists weathering and is sensor safe.

Jb weld delivers the legendary performance of the World's Strongest Bond. Easy to use: curing when the product is exposed to the moisture in air, waterproof seal on most surfaces. What the professionals use: builders, mechanics & repair pros know our products bond strong to a variety of surfaces in even the toughest environments.
BrandJ-B Weld #ad
ManufacturerJBWeld #ad
Height5 Inches
Length11 Inches
Width9 Inches
Part Number31914
Model31914

3. Permatex

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

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Permatex #ad - Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability. Fit type: Universal. Suggested applications: Valve covers, timing covers, oil pans, intake manifold end seals, and differential covers. Retains high flexibility and eliminates the need for pre-formed, paper, pre-cut, rubber or cork gaskets; OEM specified and approved for dealership warranty requirements. Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants. Temperature range -65°f to 500°f -54°C to 260°C intermittent.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.38 Inches
Weight0.1 Pounds
Width3.81 Inches
Part Number82180
Model82180

4. Permatex

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

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Permatex #ad - Temperature range -75F to 700F intermittent. Most advanced, high temp RTV silicone gasket available. Sensor-safe, low odor, and non-corrosive with superior adhesion. Three times more oil resistant than conventional silicones; eight times more flexible than cut gaskets. Suggested applications: Exhaust manifolds/headers, timing covers, water pumps, oil pans, valve covers, thermostat housings.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.38 Inches
Weight0.2 Pounds
Width3.81 Inches
Part Number81878
Model81878
WarrantyManufacturer

5. Permatex

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

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Permatex #ad - Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids. Suggested applications: valve covers, water pumps, oil pans, timing covers, intake manifold end seals, thermostat housings. Oem specified, guaranteed not to leak. Designed specially for high-torque and high vibration applications. Low odor and non-corrosive formula.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.26 Pounds
Width3.81 Inches
Part Number82194
Model82194
WarrantyManufacturer

6. Permatex

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Permatex 81160 Hi-Temp Red Form-A-Gasket Silicone Sealant. 3 oz.

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Permatex #ad - Country of Origin : China. Package weight : 025 pounds. Package dimensions: 8 l x 1. 5 h x 3. 75 w inches. Part number: 81160 .
BrandPermatex #ad
ManufacturerPermatex #ad
Height2 Inches
Length8 Inches
Weight0.18 Pounds
Width4 Inches
Part Number81160
Model81160

7. Permatex

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Permatex 27036 Optimum Grey Gasket Maker 3.35 oz, 1 Pack

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Permatex #ad - 40% higher Temp. Maximum temperature resistance: -65f to 700f-54 DegreeC to 371 DegreeC intermittent. 15% more flexible than Ultra grey. The most advanced, high Temp RTV silicone gasket maker Available. Sensor-safe, low odor, and non-corrosive. Maximum vibration resistance, with outstanding resistance to oils, cooling fluids, and shop fluids. Includes 2 nozzles. Than Ultra grey.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.25 Pounds
Width3.81 Inches
Part Number27036
Model27036
WarrantyManufacturer Warranty

8. Rutland Products

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Clear, 2.7-Ounce Tube, Rutland 500-Degree RTV High Heat Silicone Seal

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Rutland Products #ad - Will adhere to most clean surfaces including: glass, fiberglass, plastics, metal, brick, wood, and stone. Rated to withstand up to 500° F 260° C. Seal fireplace inserts, apply ceramic tiles to your fireplace surround or heat shielding behind your stove, repair solar panels, the uses are endless. Forms a tough and flexible seal. Rutland high temperature Silicone is a great solution to your sealant and adhesive needs.
BrandRutland Products #ad
ManufacturerRutland Products #ad
Height7.75 Inches
Length2.13 Inches
Width2.13 Inches
Part Number76CT
Model76CT
WarrantyThis product will be free from defects in material and manufacture for a period of eighteen (18) months from date of manufacture. Rutland fire clay company makes no other warranties including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. User is responsible for determining whether the rutland fire clay company product is fit for a particular purpose and suitable for user’s application. If this rutland fire clay company product is defective within the warranty period stated above, your exclusive remedy and rutland fire clay company’s sole obligation shall be, at rutland fire clay company’s option, to replace the rutland fire clay company product or refund the purchase price of the rutland fire clay company product.

9. Permatex

 #ad

1 Pack, Permatex 27037 Optimum Black Gasket Maker 3.35 oz

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Permatex #ad - Includes 2 nozzles. Temperature range: -65 degreef to 500 DegreeF -54 DegreeC to 260 DegreeC intermittent. Sensor-safe, low odor, and non-corrosive. Meets performance specs of oe silicone gaskets. 15% stronger than Ultra Black. Resistant to Auto & shop fluids and vibration. Retains highest flexibility with maximum oil resistance through use of a patented adhesion system. 60% more flexible than Ultra Black.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.25 Pounds
Width3.81 Inches
Part Number27037
Model27037

10. J-B Weld

 #ad

J-B Weld 32925 Ultimate Copper High Temperature RTV Silicone Gasket Maker and Sealant, 9.5 oz.

#ad
J-B Weld #ad - Hi temp silicone gasket maker & sealant: is an rtv silicone gasketing material, designed for use in mechanical assemblies where continuous temperatures up to 550º F or 650º F intermittent exist.

What the professionals use: builders, mechanics & repair pros know our products bond strong to a variety of surfaces in even the toughest environments. Do it yourself: big or small, you can diy it with j-b. Versatile & dependable: ideal for automotive, water pumps, timing covers, oil pans, exhaust manifolds, differential covers, metal, drive housings and oven doors. Jb weld delivers the legendary performance of the World's Strongest Bond.

Easy to use: curing when the product is exposed to the moisture in air, waterproof seal on most surfaces. Choose the product pros trust for your project. Our heavy duty adhesives repair & restore it right the first time. It will not shrink or crack, it forms a tough, resists weathering and is sensor safe.
BrandJ-B Weld #ad
ManufacturerJBWeld #ad
Height9.5 Inches
Length4.5 Inches
Weight0.7 Pounds
Width6.25 Inches
Part Number32925
Model32925
Warrantyno warranty