4820-01-387-6686 SEAT,VALVE Index 5305-01-387-6688 SCREW,MACHINE

National Stock Number:
5330-01-387-6687

Federal Supply Class:
5330

National Item Identification Number:
013876687

Description:
PACKING,PREFORMED

Detail:
A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see WASHER (as modified) and GASKET. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; and SEAL, NONMETALLIC, SPECIAL SHAPED SECTION. For circular (with aperature) nonmetallic items with a solid round cross-section see O-RING. Excludes CUP, COMPRESSION; GASKET; WASHER (as modified); and FELT, MECHANICAL, PREFORMED.


Manufacturer Information:
1310-1001ITEM2266573CIRCOR AEROSPACE, INC.
M83248/1-01181349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
NMP-1090PC1475954KUNKLE INDUSTRIES INC LONERGAN VALVE DIV


Techincal Specification:
MATERIALRUBBER FLUOROCARBON CLASS FPM OVERALL
ELONGATION PERCENTAGE125 MAXIMUM
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL OVERALL
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND
0.073 INCHES MAXIMUM
CENTER HOLE DIAMETER0.296 INCHES MINIMUM AND
0.306 INCHES MAXIMUM
PERIPHERAL DIAMETER0.441 INCHES NOMINAL
DEPARTURE FROM CITED DOCUMENTMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
CRITICALITY CODE JUSTIFICATIONZZZW
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEM83248/1-011


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