OR WAIT null SECS
Centrifugal pumps require bearings to carry radial/axial loads. Bearing alternatives: Anti-friction, hydrodynamic ring oil lubricated or hydrodynamic pressure lubricated. Oil lubricated (anti-friction) bearings are used in majority of process pumps to carry loads
Mechanical seals are often used in pumps handling hazardous as well as non- hazardous liquids that must be contained within the unit.