9330-01-022-8259 WINDOW,OBSERVATION Index 7690-01-022-8261 MARKER,IDENTIFICATION

National Stock Number:
4820-01-022-8260

Federal Supply Class:
4820

National Item Identification Number:
010228260

Description:
SEAT,VALVE

Detail:
A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.


Manufacturer Information:
180422-9199657MAROTTA CONTROLS INC


Techincal Specification:
STYLE DESIGNATORPLAIN
OVERALL HEIGHT0.259 INCHES MINIMUM AND
0.261 INCHES MAXIMUM
BODY OUTSIDE DIAMETER0.436 INCHES MINIMUM AND
0.437 INCHES MAXIMUM
BODY INSIDE DIAMETER0.329 INCHES NOMINAL
MATERIALPLASTIC POLYCHLOROTRIFLUOROETHYLENE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-55028,DEL-F-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SEATING SURFACE SHAPERADIAL
SEAT RADIUS0.002 INCHES NOMINAL
SPECIAL FEATURESOD GROOVED TO ACCOMMODATE O-RING


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