5360-01-496-0447 SPRING,HELICAL,EXTENSION Index 4820-01-496-0449 BALL,CHECK

National Stock Number:
5330-01-496-0448

Federal Supply Class:
5330

National Item Identification Number:
014960448

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:
167-6985280-10053711NAVAL SEA SYSTEMS COMMAND
25000875-375B30781PARKER-HANNIFIN CORPORATION
412125000875-375B30781PARKER-HANNIFIN CORPORATION
H541-0252-10096169ELECTRIC BOAT CORPORATION


Techincal Specification:
CENTER HOLE DIAMETER0.875 INCHES NOMINAL
CROSS-SECTIONAL HEIGHT0.375 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLEU WITH O-RING
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYPOLYPAK TYPE B
PERIPHERAL DIAMETER1.375 INCHES NOMINAL


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