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National Stock Number:
5330-00-782-1201
Federal Supply Class:
5330
National Item Identification Number:
007821201
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:
| 2104371PC11 | 81316 | PORTSMOUTH NAVAL SHIPYARD |
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Techincal Specification:
| BODY RECESS DEPTH | 0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM | | CENTER HOLE DIAMETER | 2.552 INCHES MINIMUM AND 2.572 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | SPECIAL | | CROSS-SECTIONAL HEIGHT | 0.342 INCHES MINIMUM AND 0.362 INCHES MAXIMUM | | CROSS-SECTIONAL THICKNESS | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM | | FLANGED BODY OUTSIDE DIAMETER | 3.052 INCHES MINIMUM AND 3.072 INCHES MAXIMUM | | HARDNESS RATING | 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-6855,CL 1,GR 80 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL | | PERIPHERAL DIAMETER | 3.162 INCHES MINIMUM AND 3.182 INCHES MAXIMUM | | RIM SURFACE WIDTH | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
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