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 5835-01-548-4955
NSN 5990-01-481-6508
NSN 6110-00-525-3418
NSN 5920-01-032-5002
NSN 5945-00-269-5375
NSN 5985-01-550-4089
NSN 4140-01-631-4447
NSN 5930-00-827-2050
NSN 5975-00-263-3379
NSN 5835-00-065-6757
NSN 6145-00-905-7255
NSN 6650-00-098-6128