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 5999-00-482-2712
NSN 5905-01-158-7791
NSN 5965-01-336-5107
NSN 6110-01-031-7185
NSN 5999-01-406-5216
NSN 4140-01-028-2004
NSN 6610-01-281-6764
NSN 5855-01-325-3380
NSN 5965-00-100-1291
NSN 5960-01-305-5449
NSN 5935-01-331-5985
NSN 6110-00-441-3711