SYNTECH

GREASE AND OIL RETAINERS OF THE FRICTION TYPE USED TO SEAL THE SPACE BETWEEN A SHAFT AND AN ENGINE WALL-NAMELY, RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION MATERIALS; RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION MATERIALS AND HAVING A SPRING FITTED THERETO; RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION, HAVING A SPRING FITTED THERETO AND THE WHOLE HELD WITHIN A CAGE OR SHELL OF DUCTILE STEEL, BRASS, OR ALUMINUM; AND RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION BONDED TO A CAGE OR SHELL OF METAL