5331-01-156-3767 O-RING Index 5330-01-156-3769 PACKING,PREFORMED

National Stock Number:
5330-01-156-3768

Federal Supply Class:
5330

National Item Identification Number:
011563768

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:
MS28775-3880U583SAE INTERNATIONAL
MS28775-38881343SOCIETY OF AUTOMOTIVE ENGINEERS INC
SAE-AS287750U583SAE INTERNATIONAL
MS28775-38896906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
ELONGATION PERCENTAGE160 MAXIMUM
CENTER HOLE DIAMETER18.910 INCHES MINIMUM AND 19.000 INCHES MAXIMUM
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
PERIPHERAL DIAMETER19.375 INCHES NOMINAL
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT


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