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 6220-01-321-7655
NSN 5965-01-060-2558
NSN 5990-00-357-8103
NSN 4140-01-369-2959
NSN 5999-01-285-9206
NSN 5998-01-224-5542
NSN 5996-01-421-9391
NSN 5945-01-399-0608
NSN 5905-00-431-4785
NSN 6650-01-633-9147
NSN 5915-00-674-5887
NSN 5930-00-907-9565