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 5855-00-912-3885
NSN 5985-00-240-3980
NSN 6220-01-373-4589
NSN 5975-01-454-1308
NSN 6645-01-257-2856
NSN 6650-01-290-1029
NSN 5998-00-289-9092
NSN 6240-01-444-0808
NSN 5965-01-378-7335
NSN 5975-01-580-0748
NSN 5950-00-468-1007
NSN 6620-01-388-1430