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The Active seal technology from Flygt enhances sealing reliability and is the most innovative sealing technology available for submersible pumps.

The unique design of the inner seal delivers a continuous pumping effect that directs any fluid back to buffer chamber and efficiently prevent leakage into the motor cavity. This gives a minimized risk for bearing or motor failures or even machine break-down.

Thanks to the Active Seal system, the time span for service inspections can be extended up to 50% in many applications.

• Enhanced sealing reliability with zero leakage into the drive unit.
• Creates a pumping action through the rotation of the laser-cut pumping vanes on the rotating seal face of the inner seal.
• No accumulated leakage over time in continuous duty operations.
• Minimize the risk for bearing and stator failures as well as machine breakdown
• Minimize the risk for service actions, such as emptying liquid from the inspection chamber or from the stator housing.
• Facilitate extended intervals for service inspection in many applications
• Easy to upgrade. Flygt mechanical seals with Active Seal technology are completely interchangeable with earlier generation of Flygt mechanical seals.

• A unique and patented sealing system comprising an active inner seal that acts as a micro-pump, continuously preventing buffer liquid from entering the motor cavity. The outer seal prevents the leakage of the pumped media into the buffer chamber.
• Available for a wide range of Flygt wastewater pumps, dewatering pumps, slurry pumps, mixers and propeller pumps.
• 2000-series : 2201-2290,2400,2610-2670
• 3000-series : 3140-3171, 3201-3240,3300-3356, 3400-3800
• 4000-series : 4610-4680
• 5000-series : 5100-5150, 5540-5570
• 7000-series : 7045-7125

• Ensure lower costs for pump service and maintenance
• Ensures a reliable and trouble-free pumping operation with less downtime