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 5945-00-164-6447
NSN 6220-00-021-9040
NSN 2925-00-149-0760
NSN 2925-01-035-7699
NSN 2925-00-137-1209
NSN 5945-00-722-7867
NSN 5910-01-485-0279
NSN 5998-00-960-2156
NSN 6650-01-284-6536
NSN 6320-01-470-6826
NSN 5895-01-612-9791
NSN 5965-01-540-0743