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.
Classification: Gaskets,washers & other seals
NSN 5920-01-367-2542
NSN 5999-01-351-2587
NSN 6645-00-960-6594
NSN 2925-01-532-8445
NSN 5965-01-474-5654
NSN 5910-01-165-1628
NSN 5975-01-104-7028
NSN 6130-01-429-9319
NSN 6145-01-485-3563
NSN 6110-00-271-9928
NSN 5930-01-272-7146
NSN 6610-00-704-9754