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 5920-00-242-2758
NSN 6130-00-459-4526
NSN 5835-01-294-9691
NSN 5985-00-379-2345
NSN 5960-00-263-0106
NSN 5960-00-227-0243
NSN 5996-00-329-0548
NSN 5895-01-050-0304
NSN 6220-01-074-5823
NSN 6150-01-605-7166
NSN 5915-01-582-8404
NSN 2925-01-199-4001