Defender® Seals

Patented super sand seals protect against abrasion for longer motor life in extreme environments

Defender® seals provide extra protection for electric submersible pump (ESP) systems in extreme downhole environments. Configured for each application, the Defender seal is designed to extend the operational life of the ESP system with extreme redundancy and a patented design that prevents wellbore abrasives from damaging the seal and motor sections.

  • Up thrust bearing design enables shaft movement to be set with higher accuracy for less wear and greater efficiency
  • Exit ports on top of the seal utilizes the swirling effect of fluids to remove solids and abrasive materials, protecting shaft seals and radial bearings
  • Seal position prevents damage to the motor from well fluids entering during thermal expansions and contractions

System benefits

  • Specially designed high-capacity expansion chambers reduce motor oil loss due to downhole thermal cycling
  • Premium ultra-high load thrust bearings in both unidirectional and bidirectional configurations increase run life
  • Tungsten carbide bearing options and premium mechanical seals available to customize and maximize run-life performance

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