SEALS AND/OR LEAKAGE PREVENTION OR LIMITATION DEVICES FOR SEALING MACHINE BEARINGS IN PUMP FRAMES; ELECTRIC MOTORS AND GEAR BOXES FOR LABORATORY AND INDUSTRIAL USE NAMELY, LABYRINTH SEALS, BEARING SEALS AND NON-CONTACTING SEALS; MACHINE PARTS FOR LABORATORY AND INDUSTRIAL USE, NAMELY, METAL AND NON-METAL BEARING ISOLATORS AND BEARING PROTECTORS; MACHINE PARTS, NAMELY, METAL AND NON-METAL REPELLERS AND EXPELLERS FOR USE IN LABORATORY PUMP FRAMES TO KEEP/FORCE FLUID IN AND KEEP/FORCE DEBRIS AND...