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 5835-01-248-0563
NSN 6135-01-204-8712
NSN 5990-01-423-8189
NSN 5905-00-957-7501
NSN 6645-01-286-1924
NSN 5996-01-481-5152
NSN 6150-01-122-7900
NSN 5965-00-079-0928
NSN 5895-01-521-9854
NSN 6620-01-178-7838
NSN 5935-00-171-1792
NSN 5996-01-658-9875