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		                        | National Stock Number:
 2805-00-417-0608
 
 Federal Supply Class:
 2805
 
 National Item Identification Number:
 004170608
 
 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:
 
 | FR84-5 | 84596 | AVIATION MANUFACTURING GROUP, LLC |  | J3-8004 | 99121 | PRECISION RINGS INCORPORATED |  | ST7M342-5 | 76301 | THE BOEING COMPANY | 
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 Techincal Specification:
 
 | MATERIAL | STEEL CORROSION RESISTING OVERALL |  | CROSS-SECTIONAL SHAPE STYLE | PLAIN RECTANGULAR, STRAIGHT FACE |  | JOINT STYLE | VERTICAL JOINT |  | RING STYLE | CONCENTRIC |  | RADIAL WALL THICKNESS | 0.0600 INCHES MINIMUM AND |  |  | 0.0700 INCHES MAXIMUM |  | OVERALL WIDTH | 0.0610 INCHES MINIMUM AND |  |  | 0.0620 INCHES MAXIMUM | 
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