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 5930-01-432-2361
NSN 6610-01-327-3187
NSN 6135-00-057-2005
NSN 6320-00-468-8421
NSN 6650-01-570-6094
NSN 5905-00-691-9046
NSN 6105-01-023-6755
NSN 2925-01-574-7119
NSN 5895-00-201-3742
NSN 5990-00-369-1058
NSN 6620-01-167-0881
NSN 6110-01-568-7011