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 5999-00-932-4588
NSN 6135-01-399-8230
NSN 6645-01-098-1179
NSN 4140-00-181-0727
NSN 5905-00-582-7031
NSN 6645-01-463-3441
NSN 6240-00-997-4559
NSN 5945-00-692-2183
NSN 6150-00-484-8976
NSN 5975-00-486-6004
NSN 6150-01-035-7065
NSN 5945-00-476-6297