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National Stock Number:
5330-99-820-1776
Federal Supply Class:
5330
National Item Identification Number:
998201776
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:
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Techincal Specification:
| CENTER HOLE DIAMETER | 3.085 INCHES MINIMUM AND 3.115 INCHES MAXIMUM | | CROSS-SECTIONAL HEIGHT | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | SPECIAL | | HARDNESS RATING | 71.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MINIMUM OVERALL AND 80.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MAXIMUM OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MOD /PE/DMAT DTD 5594 GRADE E MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | RUBBER SYNTHETIC OVERALL | | PERIPHERAL DIAMETER | 3.500 INCHES NOMINAL | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL AND SPECIAL FEATURES |
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