3950-01-352-2248 HOIST,CHAIN Index 5330-01-352-2250 PACKING,PREFORMED

National Stock Number:
5330-01-352-2249

Federal Supply Class:
5330

National Item Identification Number:
013522249

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:
17-924-7427-6014221SCHOEFFEL INTERNATIONAL CORP
902J682-5779500WESTINGHOUSE ELECTRIC CORP


Techincal Specification:
CENTER HOLE DIAMETER1.706 INCHES MINIMUM AND 1.734 INCHES MAXIMUM
CRITICALITY CODE JUSTIFICATIONZZZY
CROSS-SECTIONAL HEIGHT0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
PERIPHERAL DIAMETER1.956 INCHES NOMINAL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS


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