5330-01-249-7877 PACKING,PREFORMED Index 5331-01-249-7879 O-RING

National Stock Number:
5330-01-249-7878

Federal Supply Class:
5330

National Item Identification Number:
012497878

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:
845-2110224 PC 2480064NAVAL SHIP SYSTEMS COMMAND
845-2181262 PC 1496169ELECTRIC BOAT CORPORATION
MS28775-0140U583SAE INTERNATIONAL
845-2181262PC14,SIZE0.2580064NAVAL SHIP SYSTEMS COMMAND
MS28775-01481343SOCIETY OF AUTOMOTIVE ENGINEERS INC
MS28775-01481349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SAE-AS287750U583SAE INTERNATIONAL
MS28775-01488044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
MS28775-01496169ELECTRIC BOAT CORPORATION


Techincal Specification:
ELONGATION PERCENTAGE160 MAXIMUM
CENTER HOLE DIAMETER0.484 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
CRITICALITY CODE JUSTIFICATIONZZZW
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM
DEPARTURE FROM CITED DOCUMENTMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
PERIPHERAL DIAMETER0.629 INCHES NOMINAL
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT


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