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 6135-00-603-4859
NSN 6135-01-314-8416
NSN 6105-00-199-8808
NSN 5910-01-584-0993
NSN 5965-01-315-5764
NSN 5975-01-170-1282
NSN 5930-01-302-3831
NSN 5920-01-056-3532
NSN 6320-00-450-7014
NSN 5965-01-563-9735
NSN 6685-00-642-0533
NSN 4140-01-350-2532