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National Stock Number:
5330-00-239-2856
Federal Supply Class:
5330
National Item Identification Number:
002392856
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:
| 2121-419PCT3 | 81316 | PORTSMOUTH NAVAL SHIPYARD | | 2121-425PCT3 | 81316 | PORTSMOUTH NAVAL SHIPYARD | | 419-4105A934844PCT3 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 425-4105A723881ALT5PCT3 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 2121-482PCX3 | 81316 | PORTSMOUTH NAVAL SHIPYARD | | 2121-487PCX3 | 81316 | PORTSMOUTH NAVAL SHIPYARD | | 4810-770701ALT1PC24 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 482-4105A721579ALT3PCX3 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | S12724ALT2 | 81316 | PORTSMOUTH NAVAL SHIPYARD |
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Techincal Specification:
| CENTER HOLE DIAMETER | 4.938 INCHES NOMINAL | | CROSS-SECTIONAL HEIGHT | 0.438 INCHES NOMINAL | | HARDNESS RATING | 88.0 SHORE DUROMETER A NOMINAL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-2765 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL | | PERIPHERAL DIAMETER | 5.953 INCHES NOMINAL |
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