Centrifugal pump users can install EagleBurgmann's double Cartex® GSDN bi-directional gas-lubricated seals to standardize new units or recondition existing ones that have conventional stuffing box packings or liquid-lubricated mechanical seals. This new product line has been designed so that seat and shaft sleeve rotate along with the pump shaft, while the springs remain stationary. Internal pressurization together with centrifugal forces create a self-cleaning effect at the sliding faces during ongoing operation. This prevents harmful contamination and increases operational reliability, especially in applications where the media contains solids. The manufacturer notes that these seals remain closed and balanced, even in critical situations during startup and shutdown, as well as if a fault occurs in the buffer gas supply.
EagleBurgmann Industries LP