10 Best Exhaust Paste Sealer for 2025

List of Top Rated Exhaust Paste Sealer from thousands of customer reviews & feedback.

Updated On Feb 2025

2,671 Reviews Studied

By Customer Ratings

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Holts Firegum 150g Read Review

  • Stops leaks and withstands heat and vibration for easy application
  • car parts
  • Packaging may differ
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Liqui Moly 3342 Exhaust Mounting Paste 150 g Read Review

  • For a long-lasting seal on exhaust systems Heat-resistant.
  • Gas-proof attachment to the exhaust, end pipe, screw-on or slide-on connections and flame rings.
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Holts Gun Gum Paste 200gm Exhaust Repair GG2R For Small Holes Repairs Leaks Read Review

  • Gas Tight Silencer Repair Paste
  • Holts Gun Gum repairs holes in silencers with a gas tight seal.
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Granville 0432 Exhaust Assembly Paste Read Review

  • Granville Exhaust Assembly Paste
  • High quality adhesive/sealant for sealing exhaust systems during assembly
  • Supplied as a ready to use thixotropic paste which exhibits excellent early grab and rapid bond strength development
  • After thermosetting the product forms a permanent seal which gives excellent adhesion in service
  • Comes in a 140g tube
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JB Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste-3 oz Read Review

  • JB WELD EXTREME HEAT: Is formulated for repairs to iron, steel and metal in high temperature environments-2400°F / 1300°C. 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.
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Holts Gun Gum Paste 200g Read Review

  • * Number 1 exhaust repair paste
  • * Undisputed market leader
  • * Permanently repairs small holes and leaks in silencers and exhaust systems
  • * Provides a gas-tight seal
  • car parts
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Hylomar F/EXPA0HY/140G 3676 Read Review

  • Hylomar Exhaust Paste
  • Water-based heat-curing jointing compound designed for use in the assembly of exhaust systems for automotive and other high temperature jointing applications
  • Will withstand the conditions typically found in vehicle exhaust systems
  • The asbestos free formulation is designed to withstand temperatures up to 1000°C
  • Comes in a 140g tube
  • Hylomar Exhaust Paste
  • Water-based heat-curing jointing compound designed for use in the assembly of exhaust systems for automotive and other high temperature jointing applications
  • The asbestos free formulation is designed to withstand temperatures up to 1000°C
  • Will withstand the conditions typically found in vehicle exhaust systems
  • Comes in a 140g tube

Best Exhaust Paste Sealer Guide In UK

Sealants and other adhesives are quite an everyday product. But not every sealant is the best out there. With the market swamped with so many options, it is keen to analyze and find the best. The exhaust paste sealants are one of the best quality adhesives out there that can be used almost every purpose. These highly potent adhesive barriers will be convenient for various purposes, and therefore, leveraging the power of such a potent product can significantly be beneficial. This buying guide has discussed many such amazing key features that these exhaust paste sealants have. This can be extremely beneficial in understanding the power and usability of the product. Let's check out the top key features below.

  • Efficient Sealing : These exhaust paste screwfix sealers can efficiently seal holes, tears, or leaks in any exhaust system within minutes.
  • Heat Resistant : This is extremely heat resistant since exhaust systems usually face a lot of heat already. Therefore, these will not be affected by the heat produced by the exhaust systems.
  • Asbestos-free : Brands like Sonax, holts, and others have focused on making the exhaust paste sealer completely asbestos-free, which is a huge benefit since these are extremely important for better sustainability.
  • Volume : There are numerous sizes available but buying the 1-liter container will last for quite a long time.
  • Assembling : If one has bought a new spare part or any other component, this can be extremely handy for the entire assembling purpose. This will help to attach the components conveniently.
  • Versatile : One can use this versatile product for automobile appliances, marine, motorcycle, or other heavy-duty appliances easily. Therefore, no need to buy different types of sealants for each use.
  • Fittings : These brands are ideal for use in compression joints and screwed fittings for every appliance .
  • Easily Reversible : If one is not happy with the application, one can easily redo it. These exhaust paste sealers do not set rock hard. This gives the feasibility of changing as per the requirements.
  • No Mixing : The regular sealants would have required some mixing medium, but brands like Sonax or Fernox require no mixing medium and are already ready to sue right from the container itself!
  • Material : There could be different types of materials used as these exhaust paste sealants, but the most common and the sturdy one is silicon.
  • Compatibility : One can use these for hot and cold water services. None of such external conditions can affect the strength of the exhaust paste sealants.
  • Durable : A one-time application of these exhaust paste sealants will last for ages. These do not shrink or crack with age. Therefore, no need to worry about it now and then.
  • Price : With so many excellent benefits, these are very fairly priced. Most of these are priced in the range of £6 to £50, which is quite affordable and budget-friendly.
  • Warranty : If one ever sees that the exhaust paste sealants aren't working properly or not having the same rigidity, fear not. Just contact the brand, and one can get it fixed with minimal charges. Most of these brands provide a warranty of at least six months to two years to ensure the product's maximum safety.