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 5910-00-290-1577
NSN 5855-01-327-2681
NSN 7035-00-445-9657
NSN 5975-00-249-5331
NSN 6685-01-571-4039
NSN 4140-01-450-9426
NSN 5935-00-885-1010
NSN 6135-01-174-8057
NSN 5895-01-033-4259
NSN 6320-01-078-8257
NSN 5835-00-905-7165
NSN 6650-00-044-1933