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 5910-00-774-8137
NSN 5895-01-576-2331
NSN 6130-01-660-3211
NSN 6130-01-609-1969
NSN 6650-01-272-9746
NSN 6240-00-269-3346
NSN 6650-01-567-1933
NSN 6135-01-523-0370
NSN 6645-01-550-9669
NSN 6620-01-234-1799
NSN 5945-01-424-4534
NSN 5895-01-501-3311