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 5990-01-359-8334
NSN 2925-01-513-9114
NSN 4140-01-012-3996
NSN 5996-01-467-9391
NSN 6110-01-459-7236
NSN 2925-00-912-3993
NSN 6145-01-208-9892
NSN 5999-01-177-4099
NSN 5835-00-170-5238
NSN 6150-01-463-3951
NSN 6240-01-421-9388
NSN 5920-01-336-7568