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 5999-01-600-2644
NSN 6145-00-468-3583
NSN 6145-00-562-7463
NSN 5990-01-223-9414
NSN 5990-01-609-4793
NSN 5920-01-184-1454
NSN 6105-01-023-2144
NSN 5960-00-254-4271
NSN 4140-00-707-2963
NSN 6650-01-170-4397
NSN 4140-01-393-0720
NSN 6110-01-337-6825