4820-00-021-2100 SEAT,VALVE Index 2825-00-021-2102 RING,VALVE SEAT E,P

National Stock Number:
3120-00-021-2101

Federal Supply Class:
3120

National Item Identification Number:
000212101

Description:
BEARING,SLEEVE

Detail:
A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also BUSHING, SLEEVE; SPACER, SLEEVE; and WASHER (as modified). Excludes PIN, HOLLOW.


Manufacturer Information:
905J318-1079500WESTINGHOUSE ELECTRIC CORP
905J318-1090099NORTHROP GRUMMAN SYSTEMS CORPORATION
905J318A1079500WESTINGHOUSE ELECTRIC CORP
905J318A1088657WESTINGHOUSE ELECTRIC CORP POWER GENERATION-TURBINE DIV
905J318A1090099NORTHROP GRUMMAN SYSTEMS CORPORATION
905J318PC1079500WESTINGHOUSE ELECTRIC CORP
905J318PC1090099NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
MATERIALTIN ALLOY INNER LAYER
STEEL OUTER LAYER
STYLE DESIGNATORSEGMENTED, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH2.2500 INCHES NOMINAL
BODY OUTSIDE DIAMETER6.9980 INCHES MINIMUM AND
6.9990 INCHES MAXIMUM
BODY INSIDE DIAMETER4.5030 INCHES MINIMUM AND
4.5040 INCHES MAXIMUM
CORNER SHAPESQUARE ALL CORNERS
THE MANUFACTURERS DATA
MANUFACTURERS CODE90099
DESIGN CONTROL REFERENCE905J318A10


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