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Shopping exhaust manifold sealant has never been easy. You may come many of website, read exhaust manifold sealant reviews, check the price… It will really makes you headache and tired. Don’t worry! I’ve found ways to make it less painful. Let’s find in below article.

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Best exhaust manifold sealant reviews

1. Blue Magic 8024 ThermoSteel High-Temp Metal Repair - 24 oz.

Feature

Welds cracks and holes in iron and steel
Withstands temperatures to 2400 degree Fahrenheit
Strength increases with heat
Fills cracks and holes and pits
Great for boilers, stoves, BBQ's, furnaces, heaters

2. J-B Weld 8297 HighHeat 550 Degree Epoxy Putty Stick - 2 oz.

Feature

J-B WELD HIGHHEAT: A hand mixable two part epoxy putty stick that is formulated to repair and rebuild materials that will be exposed to high temperatures in automotive and industrial maintenance applications. J-B Weld HighHeat is designed for DIY repairs on exhaust manifolds, tail pipes, mufflers, engine blocks, duct work and other various high temperature projects.
CURE AND SET TIME: After kneading the two part formula together by hand, HighHeat takes 1 hour to set and cures in 8 hours. J-B Weld HighHeat set and cure color is machine grey.
PRODUCT FEATURES AND STRENGTH: J-B Weld HighHeat has lap shear strength of 800 PSI at room temperature and 600 PSI at 400oF (204oC) or more. HighHeat is able to withstand continuous heat up to 450oF (232oC) and intermittent heat of 500oF (260oC). HighHeat is 3x stronger at higher temperatures than conventional epoxy puttys and can be tapped and drilled.
MAJOR USES: Exhaust Manifolds, Tail Pipes, Mufflers, Engine Blocks, Duct Work, Machinery and other high temperature equipment.
DO IT YOURSELF: Big or small, you can DIY it with J-B Weld. Our heavy duty epoxy and adhesives repair & restore it right the first time. J-B Weld delivers superior performance, quality, and results for the Worlds Strongest Bond.
3 times stronger at high temperatures
Withstands continuous heat up to 450 degrees Fahrenheit, and intermittent heat up to 500 degrees Fahrenheit
Strength of 800 PSI at room temperature and 600 PSI at 400 degrees Fahrenheit
Perfect for tail pipes, mufflers, machinery, engine blocks, and exhaust manifolds
Special Shipping Information: This item cannot be returned and has additional shipping restrictions

3. J-B Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz

Feature

JB WELD EXTREME HEAT: Is formulated for repairs to iron, steel and metal in high temperature environments-2400F / 1300C. Non-flammable, it contains no solvents or Volatile Organic Compounds (VOCs).
THE ORIGINAL COLD WELD: JB Weld was developed as an alternative to torch welding. Designed to be effective in extreme environments, once it sets, it creates a permanent bond stronger than steel.
SIMPLE TO USE: When fully cured, this metallic compound can be drilled, machined or sanded. It is great for repairing cracks, small gaps, seam connections or holes.
VERSATILE & DEPENDABLE: Ideal for repair work on : exhaust manifolds, pipe connections, mufflers, catalytic converters, outdoor grills, fire boxes, gas and commercial furnaces and water heaters.
DO IT YOURSELF: Big or small, you can DIY it with J-B. Our heavy duty adhesives repair & restore it right the first time. JB Weld delivers the legendary performance of the World's Strongest Bond.

4. J-B Weld 37901 2 Pack 3 oz. Extreme Heat Temperature Resistant Metallic Paste

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

Feature

Most advanced, high temp RTV silicone gasket available
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
Suggested Applications: Exhaust manifolds/headers, valve covers, oil pans, timing covers, water pumps, thermostat housings

6. Permatex 80335 Muffler and Tailpipe Sealer, 3 oz.

Feature

Seals holes and leaks in mufflers, tailpipes and around joints
Makes new installations more secure
Waterproof, non-shrinking paste formula; shock resistant
Temperature Range: up to 2000F (1000C)
Suggested Applications: Mufflers, tailpipes, joints, and catalytic converters; exhaust system must be cool before applying

7. Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant, 4 oz.

Feature

Slow-drying, non-hardening brush-top sealant
Resists gasoline, oil and grease
Approved for use in aviation as well as automotive applications
Suggested Applications: Close-fitting machined surfaces, sealing hoses, solid gaskets
Temperature range of -65F to 400F

8. Permatex 80697 Copper Spray-A-Gasket Hi-Temp Adhesive Sealant, 9 oz. net Aerosol Can

Feature

Fast-drying, metallic copper spray adhesive/sealant helps to dissipate heat, prevents gasket burnout, and improves heat transfer
Fills minor surface irregularities, fills hot spots and surface imperfections
Resists all types of automotive fluids, especially gasoline
Temperature Range: -50F to 500F (-45C to 260C)
Suggested Applications: Cylinder head gaskets, exhaust manifold gaskets, and other high temperature applications

9. Design Engineering 010301 High-Temperature Silicone Coating Spray - Black

Feature

Lasting protection for any hot surface up to 1500 degrees Fahrenheit
Penetrates, seals, protects and prolongs the lifespan of exhaust wrap
Works equally well on exhaust headers, pipes, engine blocks, and other applications where coatings are required
Protection from abrasions, hot oil spills, and road grime
Recommended for use with DEI non-Titanium exhaust wraps

10. J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant - Red - 3 oz.

Feature

HI TEMP RED SILICONE GASKET MAKER & SEALANT: Is an RTV (Room Temperature Vulcanized) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550 F or 650 F intermittent might exist
COUNT ON US: For more than 40 years, our products have earned a loyal following from people who take pride in their work. With each product we innovate, we continue to provide the world's strongest bond for your projects
EASY TO USE: Curing when the product is exposed to the moisture in air, it forms a tough, waterproof seal on most surfaces. It will not shrink or crack, resists weathering and is sensor safe
VERSATILE & DEPENDABLE: Ideal for automotive, metal, oil pans, exhaust manifolds, water pumps, timing covers, differential covers, drive housings and oven doors
DO IT YOURSELF: Big or small, you can DIY it with J-B. Our heavy duty adhesives repair & restore it right the first time. JB Weld delivers the legendary performance of the World's Strongest Bond

Conclusion

All above are our suggestions for exhaust manifold sealant. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using exhaust manifold sealant with us by comment in this post. Thank you!