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		                             National Stock Number: 4310-01-165-7999
  Federal Supply Class: 4310
  National Item Identification Number: 011657999
  Description: RING,PISTON
  Detail: A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes PACKING, PREFORMED; RETAINER, OIL SEAL; RETAINER, PACKING; RING, RETAINING; RING WIPER; and SEAL RING, METAL. 
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  Manufacturer Information:
 | 12009020 | 19200 | US ARMY ARDEC RDECOM |  | TYPE 905 | 5F573 | GREENE TWEED & CO INC |  | TYPE 905 | 72902 | PALMETTO INC |   
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  Techincal Specification:
 | MATERIAL | PLASTIC PHENOLIC OVERALL |  | CROSS-SECTIONAL SHAPE STYLE | PLAIN RECTANGULAR, STRAIGHT FACE |  | JOINT STYLE | VERTICAL JOINT |  | RING STYLE | CONCENTRIC |  | RADIAL WALL THICKNESS | 0.1270 INCHES NOMINAL |  | OVERALL WIDTH | 0.6250 INCHES NOMINAL |  | STANDARD BORE DIAMETER | 3.745 INCHES |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY BORE DIA |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 5F573 |  | DESIGN CONTROL REFERENCE | TYPE 905 |   
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