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 6610-01-381-0652
NSN 6220-00-719-7714
NSN 5985-00-816-8486
NSN 5920-00-990-3116
NSN 6135-00-451-0709
NSN 5990-01-364-8405
NSN 5996-01-571-9384
NSN 7035-00-535-8109
NSN 5960-01-498-0572
NSN 5996-00-079-0384
NSN 5855-00-962-5792
NSN 6145-01-386-6762