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 6220-01-579-3138
NSN 5935-01-429-9941
NSN 5935-01-451-4997
NSN 5990-01-490-4341
NSN 2925-01-196-2904
NSN 2925-00-617-0826
NSN 6320-01-481-7322
NSN 5930-01-588-7736
NSN 6130-01-580-3484
NSN 6130-01-235-9103
NSN 4140-00-401-7851
NSN 5960-00-841-9227