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 6145-00-632-3229
NSN 5998-00-984-6047
NSN 6645-01-550-9669
NSN 6150-01-469-7080
NSN 6610-01-335-1660
NSN 5975-01-613-9763
NSN 6105-00-610-7788
NSN 5960-01-507-9112
NSN 5999-01-463-7443
NSN 5996-00-600-1028
NSN 6650-01-172-5502
NSN 6685-01-328-0648