4720-01-143-4139 HOSE ASSEMBLY,NONMETALLIC Index 4320-01-143-4141 RING,WEARING

National Stock Number:
2815-01-143-4140

Federal Supply Class:
2815

National Item Identification Number:
011434140

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:
21802515434CUMMINS INC.


Techincal Specification:
CROSS-SECTIONAL SHAPE STYLEPLAIN KEYSTONE, STRAIGHT RADII FACE
JOINT STYLEVERTICAL JOINT
OVERALL WIDTH0.2010 INCHES MINIMUM AND 0.2110 INCHES MAXIMUM
MATERIALSTEEL OVERALL
RADIAL WALL THICKNESS0.1525 INCHES MINIMUM AND 0.1540 INCHES MAXIMUM
RING STYLECONCENTRIC
STANDARD BORE DIAMETER5.500 INCHES
SURFACE TREATMENTCHROMIUM OVERALL


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