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 6240-00-034-5909
NSN 6240-01-625-1279
NSN 5960-01-369-3628
NSN 5998-00-350-2514
NSN 6320-00-456-0836
NSN 6130-00-035-3898
NSN 5996-01-175-6195
NSN 5935-00-323-8838
NSN 5930-00-925-7560
NSN 5975-00-243-4491
NSN 5935-01-366-1985
NSN 5950-01-415-3910