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 5920-01-367-2542
NSN 5835-00-617-3578
NSN 5996-01-259-3982
NSN 5920-01-467-2079
NSN 5960-00-679-3944
NSN 5950-01-157-6619
NSN 6685-01-512-8345
NSN 5930-00-687-2288
NSN 6130-00-034-1116
NSN 5905-01-131-9472
NSN 6145-01-492-5642
NSN 6130-01-389-6937