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