Patent ID: 7338252

Claim:
A pump for the transporting of fluids and/or of mixtures of fluids with a proportion of solid material and for a pressure ranging from 3 to 320 bar comprising a housing ( 1 ), a shaft ( 2 ) and at least one restrictor gap seal which is provided in the housing ( 1 ) to seal the shaft with respect to the housing, wherein the restrictor gap seal is formed as a brush seal arrangement ( 8 . 1 - 8 . 3 ) which contains one or more individual brush seals ( 8 ′) which include as sealing members a plurality of sealingly arranged sealing members selected from the group consisting of, bristles, wires, and combinations thereof ( 8 a ) which are distributed and fastened in ring form, wherein the sealing members extend towards at least one of the shaft and a shaft protection sleeve fitted to the shaft and to an axial stop on the shaft.