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		                        | National Stock Number:
 3040-25-150-2523
 
 Federal Supply Class:
 3040
 
 National Item Identification Number:
 251502523
 
 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:
 
 | 21-10929 | 1CC45 | MAC GREGOR USA INC |  | 21-10935 ITEM 22 | 0H7R3 | MACGREGOR USA INC. |  | 21-10935 ITEM 23 | 0H7R3 | MACGREGOR USA INC. |  | HS 1428 S1.1 ITEM 23 | N1137 | BAUER-NILSEN A/S |  | GA160/175-9-12 | S3623 | STEFA INDUSTRI AB |  | 21-10935 ITEM 23 | S8828 | MACGREGOR SWEDEN AB | 
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