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National Stock Number:
5330-01-238-1228
Federal Supply Class:
5330
National Item Identification Number:
012381228
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.
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Manufacturer Information:
| MS9068-228 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| MATERIAL | RUBBER OVERALL | | ELONGATION PERCENTAGE | 125 MAXIMUM | | HARDNESS RATING | 70.0 SHORE DUROMETER A NOMINAL OVERALL | | CROSS-SECTIONAL SHAPE STYLE | O-RING | | CROSS-SECTIONAL HEIGHT | 0.135 INCHES MINIMUM AND | | 0.143 INCHES MAXIMUM | | CENTER HOLE DIAMETER | 2.224 INCHES MINIMUM AND | | 2.244 INCHES MAXIMUM | | PERIPHERAL DIAMETER | 2.512 INCHES NOMINAL | | DEPARTURE FROM CITED DOCUMENT | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS | | CRITICALITY CODE JUSTIFICATION | ZZZW | | TEMP RATING | -85.0 DEG FAHRENHEIT AND | | 401.0 DEG FAHRENHEIT | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 96906 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS9068-228 |
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