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Choose the product pros trust for your project. Easy to use: curing when the product is exposed to the moisture in air, waterproof seal on most surfaces.
Versatile & dependable: ideal for automotive, metal, timing covers, differential covers, water pumps, exhaust manifolds, oil pans, drive housings and oven doors. It will not shrink or crack, it forms a tough, resists weathering and is sensor safe.



This gasket sealant resists mechanical enforcement after curing. Our 100% silicone mastic joint sealant is a gap filler used on waterproof sealing and bonding in stoves, motors, chimneys, gaskets in pumps, automobiles and where parts must perform at high temperatures and heat.
Excellent heat resistance after curing up to 482°F permanently and up to 572°F temporarily. This silicone caulk is virtually unaffected by chemical deterioration, extreme weather, temperature or aging. High temperature silicone is a flexible sealer and long-lasting adhesive that dries slowly, making it a preferred option for both DIYers and experts.


1. Permatex
#ad
Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
#adPermatex #ad - Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants. Suggested applications: Valve covers, intake manifold end seals, oil pans, timing covers, and differential covers.More information #ad
Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability. Fit type: Universal. Temperature range -65°f to 500°f -54°C to 260°C intermittent.Brand | Permatex #ad |
Manufacturer | Permatex #ad |
Height | 8 Inches |
Length | 1.38 Inches |
Weight | 0.1 Pounds |
Width | 3.81 Inches |
Part Number | 82180 |
Model | 82180 |
Warranty | Limited Manufacturer |
More information #ad
2. Permatex
#ad
Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker, 3.5 oz.
#adPermatex #ad - Low odor and non-corrosive formula. Suggested applications: valve covers, water pumps, intake manifold end seals, timing covers, oil pans, thermostat housings.More information #ad
Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids. Designed specially for high-torque and high vibration applications.Brand | Permatex #ad |
Manufacturer | Permatex #ad |
Height | 8 Inches |
Length | 1.25 Inches |
Weight | 0.26 Pounds |
Width | 3.81 Inches |
Part Number | 82194 |
Model | 82194 |
Warranty | LIMITED WARRANTY |
More information #ad
3. Permatex
#ad
3 oz. Tube, Permatex 80022 Sensor-Safe Blue RTV Silicone Gasket Maker
#adPermatex #ad - Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating. Effectively replaces almost any cut gasket. Suggested applications: Valve covers, water pumps, oil pans, thermostat housings, timing covers, transmission pans.More information #ad
Temperature range of -65 degrees fahrenheit to 500 degrees fahrenheit intermittent. Coats pre-cut gaskets to increase reliability without fouling oxygen sensors.Brand | Permatex #ad |
Manufacturer | Permatex #ad |
Height | 8 Inches |
Length | 1.25 Inches |
Weight | 0.1 Pounds |
Width | 3.81 Inches |
Part Number | 80022 |
Model | 80022 |
Warranty | Manufacturer Warranty |
More information #ad
4. J-B Weld
#ad
J-B Weld 31914 Red High Temperature RTV Silicone Gasket Maker and Sealant, 10.3 oz.
#adJ-B Weld #ad - Jb weld delivers the legendary performance of the World's Strongest Bond. What the professionals use: builders, mechanics & repair pros know our products bond strong to a variety of surfaces in even the toughest environments.Choose the product pros trust for your project. Easy to use: curing when the product is exposed to the moisture in air, waterproof seal on most surfaces.
More information #ad
Do it yourself: big or small, you can diy it with j-b. Our heavy duty adhesives repair & restore it right the first time. 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. Versatile & dependable: ideal for automotive, metal, timing covers, differential covers, water pumps, exhaust manifolds, oil pans, drive housings and oven doors. It will not shrink or crack, it forms a tough, resists weathering and is sensor safe.
Brand | J-B Weld #ad |
Manufacturer | JBWeld #ad |
Height | 5 Inches |
Length | 11 Inches |
Weight | 0.64 Pounds |
Width | 9 Inches |
Part Number | 31914 |
Model | 31914 |
More information #ad
5. Permatex
#ad
Permatex Hi-Temp Rtv Silicone Gasket Maker 3.35 Oz. -65 To 500 °f
#adPermatex #ad - Hi temp. Sensor safe-low odor-non- corrosive. Retains high flexibility. 3. 35 oz. Tube. Fast curing.More information #ad
Brand | Permatex #ad |
Manufacturer | Permatex #ad |
Height | 8 Inches |
Length | 9 Inches |
Weight | 0 Pounds |
Width | 3.8 Inches |
Part Number | 82180 |
Model | 82180 |
More information #ad
6. Permatex
#ad
3.35 oz. Tube, Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 2 Pack
#adPermatex #ad - Permatex 82180 ultra black maximum oil resistance RTV Silicone Gasket Maker, 3. 35 oz. Tube, 2 Pack.More information #ad
Brand | Permatex #ad |
Manufacturer | Permatex #ad |
Height | 4 Inches |
Length | 1 Inches |
Weight | 0.5 Pounds |
Width | 4 Inches |
Part Number | 82180-2 |
Model | 82180-2 |
More information #ad
7. Akfix
#ad
High Heat Silicone Sealant, Waterproof Seam&Gasket Sealer for Automotive, 100% Silicone Flexible Gap Filler | 1-Pack, Akfix HT300 High Temp Silicone Sealant, RTV Gasket Maker, 10.5 Oz. Red
#adAkfix #ad - Will not crack, shrink or become brittle. Akfix ht300 is a very powerful, long-lasting adhesive that can endure exposure to high temperatures and is heat resistant silicone. With rtv silicone gasket maker, you can count on waterproof performance in most conditions.This gasket sealant resists mechanical enforcement after curing. Our 100% silicone mastic joint sealant is a gap filler used on waterproof sealing and bonding in stoves, motors, chimneys, gaskets in pumps, automobiles and where parts must perform at high temperatures and heat.
More information #ad
Excellent heat resistance after curing up to 482°F permanently and up to 572°F temporarily. This silicone caulk is virtually unaffected by chemical deterioration, extreme weather, temperature or aging. High temperature silicone is a flexible sealer and long-lasting adhesive that dries slowly, making it a preferred option for both DIYers and experts.
Brand | Akfix #ad |
Manufacturer | Akfix #ad |
Height | 9.05 Inches |
Length | 1.96 Inches |
Weight | 0.82 Pounds |
Width | 1.96 Inches |
Part Number | Akfix HT300-1-Pack |
Model | Akfix HT300-1 Pack |
More information #ad
8. Permatex
#ad
3 oz. Tube, Permatex 81878 Ultra Copper Maximum Temperature RTV Silicone Gasket Maker
#adPermatex #ad - Three times more oil resistant than conventional silicones; eight times more flexible than cut gaskets. Most advanced, high temp RTV silicone gasket available.More information #ad
Sensor-safe, low odor, and non-corrosive with superior adhesion. Temperature range -75F to 700F intermittent. Suggested applications: Exhaust manifolds/headers, valve covers, water pumps, timing covers, oil pans, thermostat housings.Brand | Permatex #ad |
Manufacturer | Permatex #ad |
Height | 8 Inches |
Length | 1.38 Inches |
Weight | 3.3 Pounds |
Width | 3.81 Inches |
Part Number | 81878 |
Model | 81878 |
Warranty | Manufacturer |
More information #ad
9. Permatex
#ad
Permatex 80022-12PK Sensor-Safe Blue RTV Silicone Gasket Maker, 3 oz. Tube Pack of 12
#adPermatex #ad - Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating. Suggested applications: Valve covers, oil pans, thermostat housings, water pumps, timing covers, transmission pans.More information #ad
Effectively replaces almost any cut gasket. Sold in case packs of 12. Coats pre-cut gaskets to increase reliability without fouling oxygen sensors.Brand | Permatex #ad |
Manufacturer | Permatex #ad |
Height | 9 Inches |
Length | 8.5 Inches |
Weight | 2.88 Pounds |
Width | 4 Inches |
Part Number | 80022-12PK |
Model | 80022-12PK |
More information #ad