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 5996-01-433-2253
NSN 6135-00-628-1142
NSN 5835-00-996-2912
NSN 5985-01-643-9030
NSN 4140-01-603-7259
NSN 5998-01-571-8105
NSN 6620-01-514-8859
NSN 6150-01-250-7146
NSN 5945-01-053-9919
NSN 5905-00-850-4699
NSN 5996-00-901-0519
NSN 6150-01-399-3673