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 5945-00-401-1188
NSN 5910-00-369-9707
NSN 6645-00-733-0667
NSN 5975-01-600-1179
NSN 6145-00-323-0185
NSN 5915-00-944-9823
NSN 6650-00-361-8222
NSN 6220-01-581-2162
NSN 5960-01-073-6043
NSN 5910-01-329-6262
NSN 6105-01-462-1657
NSN 5960-01-436-2159