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 5990-00-466-2952
NSN 5945-01-433-3390
NSN 6220-01-296-9571
NSN 5999-01-542-0878
NSN 5998-00-072-2437
NSN 6645-01-629-9657
NSN 6650-01-557-4143
NSN 5990-01-609-4793
NSN 5855-01-465-4083
NSN 5905-01-029-3864
NSN 6220-01-415-3350
NSN 5996-01-379-0664