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 6320-01-420-0340
NSN 6105-01-626-2151
NSN 6685-01-601-2691
NSN 6110-00-115-2924
NSN 5920-01-406-3950
NSN 4140-01-123-2182
NSN 5920-00-827-6017
NSN 5996-00-276-5480
NSN 5915-01-561-4255
NSN 5910-01-083-1209
NSN 6145-01-422-1830
NSN 5990-00-015-3907