4820-00-446-7665 CONTROL,PISTON ASSE Index 5330-00-446-7667 RETAINER,PACKING

National Stock Number:
5330-00-446-7666

Federal Supply Class:
5330

National Item Identification Number:
004467666

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:
404-170546980064NAVAL SHIP SYSTEMS COMMAND
Q6507322MINNESOTA RUBBER CO


Techincal Specification:
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-5516,CL B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND
71.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLESPECIAL
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL
CENTER HOLE DIAMETER6.250 INCHES NOMINAL
PERIPHERAL DIAMETER6.750 INCHES NOMINAL
TEMP RATING-65.0 DEG FAHRENHEIT AND
160.0 DEG FAHRENHEIT


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