Screw pump with improved sealing and bearing assembly

A screw pump comprising:

• a casing including an internal chamber;
• first and second rotors rotatably positioned within the chamber of the casing, the first and second rotors including intermeshing threaded-shape profiling;
• and
• a plurality of bearing seal assemblies, a bearing seal assembly positioned at each end of the first and second rotors, each bearing seal assembly including:
• a bearing positioned about an end portion of a respective one of the first rotor or the second rotor to facilitate rotation of the respective one of the first rotor or the second rotor;
• and
• a seal positioned about an end portion of the respective one of the first rotor or the second rotor to seal passage of the respective one of the first rotor or the second rotor through the casing;
• wherein the seal includes an axially extending projection and the bearing is arranged and configured to receive the axially extending projection;
• and
• wherein the bearing is coupled to the seal so that the seal is secured to the casing via compressive forces induced by a coupling of the bearing to the casing.