5331-01-097-8047 O-RING Index 5331-01-097-8049 O-RING

National Stock Number:
5330-01-097-8048

Federal Supply Class:
5330

National Item Identification Number:
010978048

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:
MS9021-33496906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
ELONGATION PERCENTAGE200 MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS-7271 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING65.0 SHORE DUROMETER A NOMINAL OVERALL
CROSS-SECTIONAL SHAPE STYLEO-RING
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND
0.215 INCHES MAXIMUM
CENTER HOLE DIAMETER2.590 INCHES MINIMUM AND
2.610 INCHES MAXIMUM
PERIPHERAL DIAMETER3.020 INCHES NOMINAL
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS9021-334


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