2520-00-350-3786 SEAL RING,METAL Index 5325-00-350-3788 RING,RETAINING

National Stock Number:
2805-00-350-3787

Federal Supply Class:
2805

National Item Identification Number:
003503787

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.


Manufacturer Information:
527640024617GENERAL MOTORS CORP
622684719207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
BORE DIAMETER OVERSIZE0.020 INCHES
CROSS-SECTIONAL SHAPE STYLEINSIDE COUNTERBORE, STRAIGHT FACE
FSC APPLICATION DATAGASOLINE ENGINE,NONAIRCRAFT
LARGEST RADIAL WALL THICKNESS0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM
OVERALL WIDTH0.0775 INCHES MINIMUM AND 0.0780 INCHES MAXIMUM
MATERIALIRON OVERALL
RING STYLEECCENTRIC
SMALLEST RADIAL WALL THICKNESS0.155 INCHES MINIMUM AND 0.160 INCHES MAXIMUM
STANDARD BORE DIAMETER3.500 INCHES
SURFACE TREATMENTCHROMIUM OUTSIDE PERIPHERY


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