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 6110-01-551-4520
NSN 4140-01-259-2951
NSN 5965-01-288-4736
NSN 5945-00-273-6916
NSN 5915-01-648-4865
NSN 5950-01-166-7004
NSN 5915-00-922-7730
NSN 4140-00-468-3499
NSN 2925-01-633-4048
NSN 5999-00-603-7869
NSN 5996-00-568-8288
NSN 5910-01-065-7972