JB WELD HighHeat Epoxy Putty



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HighHeat is a hand mixable epoxy putty stick specifically formulated to bond and repair materials that will be exposed to high temperatures in automotive and industrial maintenance applications. It cures to a tough, hard bond with little to no shrinkage. This industrial-strength product outperforms conventional epoxy putties at high temperatures and sets in 1 hour at room temperature. After 8 hours, it can be drilled, tapped, machined, ground, filed and painted. HighHeat is rated at a tensile strength of 800 PSI and cures to a machine grey in color. It is able to withstand continuous heat exposure of 400ºF and intermittent heat exposure to 550ºF

Great For
  • Exhaust Manifolds
  • Tail Pipes
  • Mufflers
  • Engine Blocks
  • Duct Work
  • Machinery
  • High Temperature Projects


  • Strength
    800 PSI at Room Temp.
    600 PSI at 400ºF
    Set Time
    1 Hour
    Functional Cure
    8 Hours
    Cure Color
    Machine Grey
    Use On
    • Automotive
    • Epoxy Putty Sticks
    • Metal
    • And More

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