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 5915-01-628-4560
NSN 2925-01-157-9204
NSN 6145-01-472-6702
NSN 6685-01-454-8639
NSN 5855-00-797-8217
NSN 2925-00-999-8967
NSN 5915-01-157-9970
NSN 6610-00-287-6884
NSN 6650-00-272-2271
NSN 5935-00-513-9606
NSN 5945-01-368-4966
NSN 5930-01-080-8890