5320-00-905-3505 PIN-RIVET Index 4820-00-905-3509 SEAT,VALVE

National Stock Number:
5365-00-905-3508

Federal Supply Class:
5365

National Item Identification Number:
009053508

Description:
SPACER,RING

Detail:
A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see GASKET. For items manufactured from lubricated plastics, see BEARING, WASHER, THRUST. For items manufactured from lubricated felt, see FELT, MECHANICAL, PREFORMED. Excludes DISK, VALVE; INSULATOR WASHER; and SHIM. See also SPACER, PLATE and SPACER, SLEEVE.


Manufacturer Information:
228-1301-2125203ROCKWELL INTL CORP FLOW CONTROL DIV
2702MS23106981HALOGEN INSULATOR AND SEAL CORP


Techincal Specification:
FSC APPLICATION DATA1. VALVE,BALL
INSIDE DIAMETER2.625 INCHES NOMINAL
OUTSIDE DIAMETER2.875 INCHES NOMINAL
OVERALL THICKNESS0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE


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