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 6110-01-110-2921
NSN 4140-01-551-1125
NSN 6220-01-510-3927
NSN 5895-01-344-4469
NSN 6685-01-532-8975
NSN 5960-00-529-2704
NSN 5910-00-813-9356
NSN 6105-01-426-4450
NSN 6320-01-082-2970
NSN 6150-01-055-6068
NSN 5920-01-478-7251
NSN 5935-01-241-0252