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 5996-01-174-3183
NSN 6610-01-301-3513
NSN 5935-00-581-9546
NSN 2925-01-125-4800
NSN 5960-01-115-1822
NSN 6650-01-584-9606
NSN 6620-01-386-5914
NSN 6220-01-528-0222
NSN 5910-01-592-3384
NSN 6620-01-467-6795
NSN 5915-00-082-1286
NSN 5998-00-446-4109