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 5925-00-144-0482
NSN 6105-00-851-5396
NSN 6105-00-492-6159
NSN 5945-00-147-2068
NSN 6685-01-577-0443
NSN 6220-01-363-2762
NSN 5965-01-434-0705
NSN 7035-01-176-2208
NSN 2925-00-852-6708
NSN 6650-00-075-4983
NSN 5975-01-028-2989
NSN 5945-01-353-8050