4820-00-622-6845 SEAT,VALVE Index 2805-00-622-6849 RING,PISTON

National Stock Number:
2805-00-622-6848

Federal Supply Class:
2805

National Item Identification Number:
006226848

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:
622684819207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
BORE DIAMETER OVERSIZE0.020 INCHES
CROSS-SECTIONAL SHAPE STYLEINSIDE COUNTERBORE, STRAIGHT FACE
JOINT STYLEVERTICAL JOINT
LARGEST RADIAL WALL THICKNESS0.180 INCHES NOMINAL
OVERALL WIDTH0.0775 INCHES MINIMUM AND 0.0780 INCHES MAXIMUM
MATERIALIRON OVERALL
RADIAL WALL THICKNESS0.0775 INCHES MINIMUM AND 0.0780 INCHES MAXIMUM
RING STYLECONCENTRIC
SMALLEST RADIAL WALL THICKNESS0.150 INCHES NOMINAL
STANDARD BORE DIAMETER3.500 INCHES


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