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 5910-01-114-7007
NSN 6620-00-186-8220
NSN 5910-00-615-0998
NSN 6650-01-123-1091
NSN 5999-01-066-3370
NSN 4140-01-382-0325
NSN 4140-01-005-0154
NSN 6110-01-439-8247
NSN 6110-01-315-6564
NSN 5905-01-612-5651
NSN 5998-00-781-9588
NSN 6135-01-388-2761