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 5930-01-562-5535
NSN 5965-00-058-6751
NSN 4140-01-188-6977
NSN 5895-01-117-5524
NSN 6150-00-882-7247
NSN 5920-00-592-7598
NSN 5920-00-485-3044
NSN 5855-00-763-2155
NSN 6145-01-506-4467
NSN 5990-01-564-9532
NSN 6220-01-408-5103
NSN 5920-01-214-0451