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 6650-01-470-9681
NSN 6240-00-201-9011
NSN 6320-01-097-5347
NSN 6620-01-463-1373
NSN 6645-00-454-0930
NSN 6650-01-115-7981
NSN 5965-01-359-0059
NSN 5998-01-169-6674
NSN 5895-01-161-6273
NSN 6145-01-023-7719
NSN 5930-01-418-1763
NSN 5950-01-613-5688