5330-01-340-3492 PACKING,PREFORMED Index 5330-01-340-3494 PACKING,PREFORMED

National Stock Number:
5330-01-340-3493

Federal Supply Class:
5330

National Item Identification Number:
013403493

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:
MS29513-36696906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
ELONGATION PERCENTAGE200 MAXIMUM
CENTER HOLE DIAMETER7.195 INCHES MINIMUM AND 7.255 INCHES MAXIMUM
PERIPHERAL DIAMETER7.645 INCHES NOMINAL
SPECIAL FEATURESMATERIAL IS RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL. HARDNESS RATING IS 65.0 SHORE DUROMETER A NOMINAL OVERALL.


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