4730-01-132-1919 PLUG,CONCENTRIC CELL Index 4730-01-132-1921 SEAL INSERT

National Stock Number:
5330-01-132-1920

Federal Supply Class:
5330

National Item Identification Number:
011321920

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:
28-90270-481412TREADWELL CORPORATION (DELAWARE)
28-90270-4CP03950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
28-90270PC481412TREADWELL CORPORATION (DELAWARE)


Techincal Specification:
CENTER HOLE DIAMETER0.482 INCHES NOMINAL
CROSS-SECTIONAL HEIGHT0.060 INCHES NOMINAL
CRITICALITY CODE JUSTIFICATIONZZZY
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
PERIPHERAL DIAMETER0.564 INCHES NOMINAL
PROPRIETARY CHARACTERISTICSPACS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D


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