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 5990-00-827-0684
NSN 5965-01-658-4674
NSN 5905-01-212-9487
NSN 5835-01-321-7895
NSN 5965-00-106-1612
NSN 6650-01-328-0546
NSN 5910-01-423-2517
NSN 6620-01-227-7219
NSN 6320-01-249-0598
NSN 6145-00-060-2012
NSN 6135-01-437-7741
NSN 5855-00-308-0474