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 6620-00-030-7759
NSN 6610-00-901-5137
NSN 5930-01-074-4336
NSN 5985-01-381-2563
NSN 5835-01-521-4979
NSN 6610-01-448-0982
NSN 6110-00-285-1895
NSN 6645-01-392-2022
NSN 6220-01-476-2085
NSN 5835-01-319-4636
NSN 5910-01-513-7776
NSN 5895-01-502-6601