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 6650-01-048-6757
NSN 4140-01-482-8447
NSN 6320-01-029-4220
NSN 5855-01-441-3189
NSN 6110-00-575-9795
NSN 7035-00-148-2300
NSN 6145-01-488-4556
NSN 6650-00-710-8130
NSN 5965-00-261-8086
NSN 5990-00-881-1031
NSN 5920-01-529-9978
NSN 6105-00-418-2222