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 5935-00-084-4061
NSN 2925-00-845-1480
NSN 5975-00-724-3147
NSN 5945-01-059-4272
NSN 6130-00-175-8066
NSN 5925-00-847-7725
NSN 4140-00-354-4117
NSN 5998-01-246-2304
NSN 6135-00-539-8088
NSN 5920-01-233-1205
NSN 5915-01-576-9773
NSN 6220-01-259-2430