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 5910-01-271-9599
NSN 5920-01-410-7740
NSN 5960-01-316-8100
NSN 6145-01-461-8062
NSN 5945-01-469-1903
NSN 5895-01-565-7303
NSN 6150-01-520-5075
NSN 6220-00-938-2931
NSN 5920-01-078-7560
NSN 6240-01-629-9175
NSN 6145-01-335-1991
NSN 5996-00-456-0895