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 6620-01-371-1655
NSN 6650-01-422-3395
NSN 5905-01-078-0353
NSN 6130-01-646-6500
NSN 6130-01-431-2489
NSN 5998-00-998-1515
NSN 6620-01-486-9040
NSN 6105-01-182-0285
NSN 5996-00-450-3907
NSN 6105-01-214-0102
NSN 5998-01-328-9338
NSN 5910-01-174-1031