4820-00-582-2520 DIAPHRAGM,VALVE,FLAT Index 5331-00-582-2522 O-RING

National Stock Number:
5330-00-582-2521

Federal Supply Class:
5330

National Item Identification Number:
005822521

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:
585-516-1715359REVCPC3580064NAVAL SHIP SYSTEMS COMMAND
8579-165REVCPC3596169ELECTRIC BOAT CORPORATION
Q42-70-366Y07322MINNESOTA RUBBER CO


Techincal Specification:
CENTER HOLE DIAMETER3.250 INCHES NOMINAL
CROSS-SECTIONAL HEIGHT0.188 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLESPECIAL
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
PERIPHERAL DIAMETER3.625 INCHES NOMINAL
TEMP RATING-45.0 FAHRENHEIT AND 220.0 FAHRENHEIT


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