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 5915-00-338-3375
NSN 5999-00-199-5285
NSN 5920-01-444-4082
NSN 5915-01-599-4159
NSN 6320-00-456-2092
NSN 5960-01-112-0721
NSN 6650-01-373-4159
NSN 5935-01-247-5348
NSN 5915-01-491-1852
NSN 5985-01-634-0635
NSN 6110-01-425-0135
NSN 5895-01-014-0438