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 5855-01-444-3376
NSN 6610-00-458-1790
NSN 6130-00-164-9857
NSN 5960-00-597-2680
NSN 5920-01-534-7042
NSN 6645-00-350-6029
NSN 6650-01-581-6243
NSN 6620-01-431-9176
NSN 4140-00-736-8813
NSN 5975-00-823-0979
NSN 5960-01-364-9795
NSN 6110-00-308-2675