DEF Diesel Exhaust Thread Sealant | Gasoila

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Gasoila's DEF (Diesel Exhaust Fluid) thread sealant is designed for systems carrying urea-based chemical reactant used in SCR systems. This pipe thread sealant for diesel has excellent resistance to a wide variety of chemicals.


  • Excellent performance with systems handling Diesel Exhaust Fluid, 100% methanol, ethanol and alcohol; ideal for concentrated and dilute acids and caustic alkali, cutting oils, aromatic solvents, glycol/water solutions, coal tar, naphtha, ethylene glycol and keytones. (For a complete list of compatible media, please see our Thread Sealant Application Selection Guide)
  • Use on epoxy type fiberglass pipe manufactured by A.O. Smith, Ameron, Fibercast and Antron
  • NOT for use with plastic pipe or oxygen
  • Temperature range: -50°F to 450°F (-46°C to 234°C)
  • Pressure range: Up to 5,000 psi for gases; 10,000 psi for liquids
  • For use on NPT threads
  • One year shelf life when stored at 40°F to 80°F (5°C to 27°C)


DEF Diesel Exhaust Thread Sealant Ordering Information

Item Number Size Units Per Case
DE04** 1/4 pt. brush 12
**Can only be ordered by case quantities

Warning Triangle WARNING: These products can expose you to chemicals including lead and/or DEHP and/or carbon black, which are known to the State of California to cause cancer or birth defects or other reproductive harm.  For more information go to

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