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 5915-01-380-5534
NSN 6240-01-048-3330
NSN 5930-01-649-3583
NSN 6145-01-518-3411
NSN 5999-01-468-5953
NSN 6105-00-603-5201
NSN 5996-00-060-6993
NSN 6650-01-259-5940
NSN 6145-01-147-8777
NSN 5998-01-361-8938
NSN 6650-01-430-4126
NSN 5975-01-160-0481