5330-00-525-0473 PACKING,PREFORMED Index 5930-00-525-0481 SWITCH,SENSITIVE

National Stock Number:
5330-00-525-0476

Federal Supply Class:
5330

National Item Identification Number:
005250476

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:
MILP551081349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
CENTER HOLE DIAMETER0.419 INCHES MINIMUM AND 0.429 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLEO-RING
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM
HARDNESS RATING88.0 SHORE DUROMETER A NOMINAL OVERALL
MATERIALRUBBER SYNTHETIC OVERALL
TEMP RATING-65.0 CELSIUS AND 158.0 CELSIUS


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