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 5935-00-181-4464
NSN 6145-01-115-2036
NSN 5990-01-568-5565
NSN 6145-01-318-8278
NSN 5895-01-226-4763
NSN 5965-01-558-2097
NSN 5999-00-794-9713
NSN 6145-00-105-1239
NSN 6220-01-175-5518
NSN 5965-00-150-1144
NSN 5960-01-224-7151
NSN 4140-01-480-4319