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 6135-01-159-9705
NSN 6320-00-343-1798
NSN 6105-01-075-3765
NSN 6110-01-165-9306
NSN 5945-00-118-1103
NSN 5996-01-625-6107
NSN 6105-01-266-5110
NSN 5965-01-550-7505
NSN 6620-00-361-3590
NSN 5960-01-206-8809
NSN 5985-01-363-8827
NSN 5960-00-331-0173