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 5960-00-874-4857
NSN 6320-01-125-3361
NSN 5905-00-472-5193
NSN 5999-01-424-3782
NSN 5945-01-427-3790
NSN 6130-00-839-2352
NSN 5998-01-160-2809
NSN 4140-01-012-0645
NSN 5920-01-031-7360
NSN 5835-01-512-4834
NSN 6150-01-246-2290
NSN 6685-01-036-0455