Chesterton 4400 dual concentric gas seal


Chesterton has developed technology that makes the use of a gas seal easy and intuitive. The 4400 delivers higher reliability with lower gas consumption than conventional gas-lubricated seals.

 Transitions to a traditional liquid seal in the event of the loss of barrier gas and recovers to a gas seal upon restoring the barrier gas

Compact flush mount design that does not require modification of the stuffing box; fits more equipment types than conventional gas seals

Innovative in-Gland Control System (IGCS) dynamically controls gas pressure to process pressure​.


Features and benefits  

  • Zero fugitive emission, monitoring exempt, dual gas seal design
  • Full sealing recovering following loss of barrier gas
  • Unique design minimizes profiled gas face wear due to loss of barrier fluid
  • Seal transitions to a contacting wet mode during gas disruptions for greater sealing reliability
  • In-Gland Control System (IGCS) dynamically tracks process pressure to minimize gas consumption
  • No heat generation
  • Designed for ANSI/API pumps, compressors, and blowers