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 6220-01-401-5337
NSN 5925-01-650-1747
NSN 6135-01-512-8740
NSN 6105-01-562-2078
NSN 5985-01-627-1207
NSN 5998-01-161-9461
NSN 5965-01-028-3435
NSN 5905-01-100-2000
NSN 5975-01-359-4848
NSN 5960-01-065-0273
NSN 6145-00-202-8570
NSN 6650-00-973-2816