Top 10 RTV Silicone Sealant – Gasket Sealers

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1. Permatex

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

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Permatex #ad - Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability. 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. Suggested applications: Valve covers, intake manifold end seals, timing covers, oil pans, and differential covers. Temperature range -65°f to 500°f -54°C to 260°C intermittent. Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants. Fit type: Universal.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.38 Inches
Weight0.1 Pounds
Width3.81 Inches
Part Number82180
Model82180
WarrantyNA

2. Permatex

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Permatex 80050 Clear RTV Silicone Adhesive Sealant, 3 oz

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Permatex #ad - Suggested applications: door frames, seams and roofs; not recommended for engine gasket, vinyl tops, windshield installation, or electrical connection applications. Waterproof, and flexible; resists water, weather, durable, and vibration. General purpose, clear RTV indoor/outdoor sealant. Temperature range: -75°f to 400°f -59°C to 204°C. Seals, fabric, bonds, vinyl, plastics, mends and secures glass, repairs, metal, weather stripping and vinyl tops.
BrandPermatex #ad
ManufacturerPermatex #ad
Height0.02 Inches
Length4.48 Inches
Weight0.2 Pounds
Width3.12 Inches
Part Number80050
Model80050
WarrantyManufacturer Warranty

3. Loctite

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Loctite Clear Silicone Waterproof Sealant 2.7-Ounce Tube 908570

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Loctite #ad - Use for sealing or repairing door frames, toys, weather-stripping, outside of fireplace doors, vents, gaskets, appliances, windows, shoes and boots. No cracking, peeling or shrinking. Bonds abs, cultured marble, granite, stainless steel, vinyl tile, aluminum, glass, wood, porcelain, ceramic, fiberglass, some rubbers and plastics. Aquarium safe. 7 oz. 2.
BrandLoctite #ad
ManufacturerLoctite #ad
Height8 Inches
Length1.25 Inches
Weight0.02 Pounds
Width3.81 Inches
Part Number908570
Model908570

4. Permatex

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

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

5. Permatex

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3 oz. Tube, Permatex 81158 Black Silicone Adhesive Sealant, Pack of 1

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Permatex #ad - Sensor-safe, general purpose black RTV indoor/outdoor sealant. Seals, vinyl, mends and secures glass, fabric, bonds, metal, repairs, plastics, weather stripping and vinyl tops. Waterproof and flexible; resists water, weather, and vibration. Suggested applications: door frames, seams and roofs, electrical connections, vinyl tops, and weather stripping; protects and repairs electrical wiring. Temperature range: -75°f to 450°f -59°C to 232°C. Fit type: Universal.
BrandPermatex #ad
ManufacturerPermatex #ad
Height2 Inches
Length8 Inches
Weight2.2 Pounds
Width4 Inches
Part Number81158
Model81158
WarrantyManufacturer Warranty

6. 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 - Suggested applications: valve covers, intake manifold end seals, oil pans, water pumps, timing covers, thermostat housings. Low odor and non-corrosive formula. 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.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0 Pounds
Width3.81 Inches
Part Number82194
Model82194
WarrantyNot Applicable

7. Permatex

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3 oz. Tube, Permatex 80022 Sensor-Safe Blue RTV Silicone Gasket Maker

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Permatex #ad - Temperature range of -65 degrees fahrenheit to 500 degrees fahrenheit intermittent. Coats pre-cut gaskets to increase reliability without fouling oxygen sensors. Suggested applications: Valve covers, timing covers, oil pans, water pumps, thermostat housings, transmission pans. Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating. Effectively replaces almost any cut gasket.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.1 Pounds
Width3.81 Inches
Part Number80022
Model80022
Warranty1-Years for defects in material and/or workmanship

8. J-B Weld

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J-B Weld 31919 Black RTV Silicone Sealant and Adhesive 10.3 oz

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J-B Weld #ad - Jb weld delivers the legendary performance of the World's Strongest Bond. Versatile & dependable: ideal for bonding, sealing, windows, interior trim, weather stripping, moldings, door frames, windshields, lens housings and more.

Choose the product pros trust for your project. Our heavy duty adhesives repair & restore it right the first time. Easy to use: upon curing, waterproof seal on most surfaces. Rtv silicone sealant & adhesive: Is a general purpose RTV Room Temperature Vulcanized Silicone, designed for sealing and bonding uneven surfaces.

Do it yourself: big or small, you can diy it with j-b. It will not shrink or crack, the silicone forms a tough, resists weathering and is great for many automotive accessories and household uses. 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
Height9.5 Inches
Length4.5 Inches
Width6.25 Inches
Part Number31919
Model31919
Warrantyno warranty

9. Loctite

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80-milliliter, Loctite 37463 Clear RTV Silicone Adhesive/Sealant Tube

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Loctite #ad - May be applied to horizontal or vertical surfaces and is waterproof and flexible. Resists oil, weather, water, vibration or grease.

Not for use on copper, brass, galvanized metals and zinc. May be applied to horizontal or vertical surfaces and is waterproof and flexible. Resists oil, weather, water, vibration or grease. Protects and repairs electrical wiring. Seals, repairs, plastics, metal, bonds, mends and secures glass, fabric, vinyl, weatherstripping and vinyl tops. Seals, metal, plastics, fabric, bonds, vinyl, repairs, mends and secures glass, weatherstripping and vinyl tops. Not for use on copper, brass, galvanized metals and zinc.
BrandLoctite #ad
ManufacturerLoctite #ad
Height1.4 Inches
Length3.85 Inches
Weight0.24 Pounds
Width7.95 Inches
Part Number491981
Model37463

10. Permatex

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

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