Copperhead ~ Gasket Adhesive



Castle® Copperhead™ gasket adhesive contains real copper to improve heat transfer and eliminate hot spots. It seals gasket holes and threaded fittings to prevent leaks, while exhibiting outstanding holding power. Copperhead™ sets up in 60 seconds, and remains tacky for positioning and easy removal. It resists temperatures from -65°F to 500°F and performs well on all types of gaskets.


  • Head Gaskets
  • Valve Cover Gaskets
  • Intake Manifolds
  • Threaded Fittings


1. Shake until mixing ball moves freely for one minute.
2. Spray uniform light misting coat on all surfaces.
3. Allow to become tacky and assemble.
4. Clear valve by spraying can upside down.


  • 16 oz (#C1613) 12/case


Keep from freezing.


  • Color: copper
  • Specific Gravity: 0.8
  • Flash Point: -40°F
  • Odor: solvent
  • Density: 4.0
  • Freeze Stable: yes

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