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 6650-00-945-9105
NSN 5999-01-512-1832
NSN 5985-01-373-8332
NSN 5945-01-111-8361
NSN 5855-01-112-7725
NSN 5930-01-197-8115
NSN 5975-00-228-1582
NSN 5905-00-174-8609
NSN 5910-00-177-6307
NSN 6240-00-364-0850
NSN 6135-01-199-1185
NSN 5975-01-571-7912