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 5998-01-030-9863
NSN 5905-01-652-5563
NSN 5975-01-582-1682
NSN 5835-01-381-2683
NSN 6685-00-810-6047
NSN 5985-01-334-3302
NSN 5975-01-658-6203
NSN 4140-01-053-2999
NSN 6105-01-549-7398
NSN 6320-01-379-1182
NSN 5985-01-597-9590
NSN 5945-00-114-3910