4720-01-204-7956 HOSE ASSEMBLY,NONMETALLIC Index 2815-01-204-7958 RING SET,PISTON

National Stock Number:
4310-01-204-7957

Federal Supply Class:
4310

National Item Identification Number:
012047957

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:
R6819888663DRESSER-RAND CO INGERSOLL-RAND OPNS A JOINT VENTURE
R68198-7SP0AT62SIEMENS ENERGY, INC.
R68198-7SP830Q4CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
R68198-7SP88663DRESSER-RAND CO INGERSOLL-RAND OPNS A JOINT VENTURE
R68198-7SP8FGX3CURTISS-WRIGHT ELECTRO-MECHANICAL CORP


Techincal Specification:
CROSS-SECTIONAL SHAPE STYLEPLAIN RECTANGULAR, STRAIGHT FACE
JOINT STYLESTEP JOINT
PROPRIETARY CHARACTERISTICSPACS
OVERALL WIDTH0.3600 INCHES MINIMUM AND 0.3650 INCHES MAXIMUM
RADIAL WALL THICKNESS0.2960 INCHES MINIMUM AND 0.3060 INCHES MAXIMUM
RING STYLECONCENTRIC
SPECIAL FEATURESPRESSURE BALANCE
STANDARD BORE DIAMETER6.000 INCHES


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