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 6650-00-764-1879
NSN 5945-00-309-0435
NSN 2925-01-430-4206
NSN 6620-01-502-9104
NSN 5996-00-043-1991
NSN 5965-01-028-6206
NSN 6620-01-395-2968
NSN 5945-00-017-2645
NSN 6620-00-778-7405
NSN 5935-00-539-5944
NSN 6645-00-544-8529
NSN 5999-01-094-7317