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 4140-01-086-0067
NSN 6110-01-412-7785
NSN 4140-01-415-5595
NSN 6320-01-651-7476
NSN 6620-01-581-8283
NSN 5910-01-259-1974
NSN 5998-01-534-7301
NSN 6105-01-245-8932
NSN 5950-01-370-4857
NSN 6150-01-125-1724
NSN 5915-00-730-3925
NSN 5905-01-139-5053