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 6220-00-145-1423
NSN 6130-01-360-4875
NSN 5996-00-153-9055
NSN 7035-01-575-1026
NSN 5945-01-344-0448
NSN 5915-01-343-5255
NSN 6135-00-309-0074
NSN 5905-01-231-9330
NSN 5855-00-327-2112
NSN 5990-01-492-6575
NSN 5915-00-636-9785
NSN 5945-00-968-6176