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 5999-01-371-3000
NSN 5960-00-921-5805
NSN 5915-00-276-8332
NSN 6135-01-448-0471
NSN 4140-01-467-1986
NSN 6110-01-424-7832
NSN 6620-01-106-3553
NSN 6650-00-104-9611
NSN 5930-00-079-9394
NSN 5975-00-078-2948
NSN 5935-00-139-9538
NSN 5965-00-458-7321