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 6650-01-606-9209
NSN 5999-00-617-2830
NSN 6645-00-825-5677
NSN 6220-01-481-3827
NSN 6150-01-373-1770
NSN 5895-01-350-3527
NSN 5920-01-561-3785
NSN 5910-01-245-8757
NSN 5910-01-502-4566
NSN 5965-01-265-6814
NSN 5960-01-181-2143
NSN 5965-01-496-1633