Seal lots and safe to run dry Solid plastic vertical centrifugal immersion pumps are used predominantly space-saving by direct installation into industrial environments . For strongly crystallizing media, centrifugal immersion Pumps are supplied with a special seal to avoid the penetration of steam and the connected crystallization. Standard depths of immersion are ranging from 200 mm up to 500 mm. Depths of immersion up to 2.500 mm are possible by the means of an intermediate bearing