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		                             National Stock Number: 4320-00-128-0516
  Federal Supply Class: 4320
  National Item Identification Number: 001280516
  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:
 | 55-22043 PART 1 | 52081 | EURAMCO SAFETY INC |  | 55-22043-190/S | 52081 | EURAMCO SAFETY INC |  | D5D17B | 10613 | PENTAIR PUMP GROUP, INC. |  | M17D17A | 10613 | PENTAIR PUMP GROUP, INC. |  | SMS-D5D17B | 57140 | SALEM MANUFACTURING & SALES INC |   
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  Techincal Specification:
 | MATERIAL | COPPER ALLOY |  | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-16576 MIL SPEC SINGLE MATERIAL RESPONSE |  | BODY STYLE | PLAIN |  | OVERALL LENGTH | 0.750 INCHES NOMINAL |  | BODY OUTSIDE DIAMETER | 5.250 INCHES NOMINAL |  | BODY INSIDE DIAMETER | 4.625 INCHES NOMINAL |  | CORNER SHAPE | SQUARE ALL CORNERS |  | SURFACE FINISH | 25.0 MICROINCHES INSIDE |   | 25.0 MICROINCHES OUTSIDE |   
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