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 5990-00-799-2796
NSN 5998-00-737-8709
NSN 5855-01-156-0417
NSN 6650-01-116-9731
NSN 4140-01-504-7221
NSN 5960-00-899-0942
NSN 6240-01-017-1049
NSN 5910-01-614-7064
NSN 6240-01-264-9586
NSN 5945-00-443-2970
NSN 5950-00-209-9832
NSN 5960-01-599-9821