2 Bearings 1set With Lock And Oil Seal Rings With Z Shield facilitate smooth rotation or linear motion by reducing friction between moving parts. Bearings facilitate smooth rotation or linear motion by reducing friction between moving parts. Lock rings, also known as retaining rings, are used to secure components onto a shaft or inside a bore. Oil seal rings, or oil seals are used to prevent lubricant leakage and to keep contaminants out of the machinery or assembly. They are also used in industrial machinery for various applications, including conveyor systems, pumps, and gearboxes. 2 Bearings 1set With Lock And Oil Seal Rings With Z Shield are valuable for repair and maintenance tasks where a complete set of components is needed to overhaul or replace worn-out parts efficiently.