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 5996-01-116-1988
NSN 5905-01-103-7882
NSN 2925-00-406-4381
NSN 6610-00-907-7834
NSN 5930-01-502-9074
NSN 6150-00-191-5258
NSN 5895-01-123-6110
NSN 6645-01-593-5290
NSN 5920-01-401-5315
NSN 5945-01-595-7658
NSN 5985-00-189-0599
NSN 5990-01-379-8794