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 6620-01-004-7072
NSN 6650-00-337-7464
NSN 5965-01-462-9340
NSN 5965-01-525-6768
NSN 5905-01-408-8252
NSN 6620-00-946-8060
NSN 5999-01-462-3040
NSN 5920-01-109-3117
NSN 5965-01-654-4571
NSN 5905-01-391-9473
NSN 5950-00-378-9959
NSN 5945-01-605-1480