A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. It is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. It may also be used as a diffuser ring in the suction and discharge throats of valves.
Classification: Parts of turbojet and turbopropeller aircraft engines, other than for use in civil aircraft
NSN 5935-01-164-8442
NSN 4140-01-224-0435
NSN 5835-00-191-4793
NSN 6240-01-640-8139
NSN 5855-01-245-8689
NSN 6650-01-399-8552
NSN 5895-01-351-0199
NSN 5895-00-013-7405
NSN 5915-01-050-3683
NSN 6645-01-508-0345
NSN 5999-01-171-7722
NSN 5999-00-183-7687