Retractable Seals

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STAR’s Retractable Seals are in the retracted position during cold start-up. Designed with PRESSURE-LOCK™ technology, each seal locks into place at precisely the right time, based on optimal pressure levels, to protect the seals and rotor from damage. Each seal is micro-customized and precision machined to meet client specifications.



Retractable Packing Rings for Steam Turbines


  • Packing is in the retracted position at start-up
  • PRESSURE-LOCK™ System closes packing
  • Protects rotor from damage during start-up
  • DOE (Department of Energy) estimates fuel savings of over 52.1 trillion BTUs