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		                        | National Stock Number:
 4320-00-097-0887
 
 Federal Supply Class:
 4320
 
 National Item Identification Number:
 000970887
 
 Description:
 RING,WEARING
 
 Detail:
 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.
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 Manufacturer Information:
 
 | 58-8-1MISER51779 | 22888 | FMC CORP |  | 58-8-1MISER51779 | 90785 | PEERLESS PUMP A TBG INC CO | 
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 Techincal Specification:
 
 | MATERIAL | COPPER ALLOY |  | GROOVE DEPTH | 0.031 INCHES NOMINAL |  | GROOVE WIDTH | 0.063 INCHES NOMINAL |  | OVERALL LENGTH | 1.375 INCHES NOMINAL |  | BODY OUTSIDE DIAMETER | 8.379 INCHES MINIMUM AND |  |  | 8.380 INCHES MAXIMUM |  | BODY INSIDE DIAMETER | 7.750 INCHES MINIMUM AND |  |  | 7.751 INCHES MAXIMUM |  | GROOVE QUANTITY | 2 |  | CORNER SHAPE | SQUARE ALL CORNERS |  | SURFACE FINISH | 125.0 MICROINCHES ALL SURFACES | 
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