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 5935-01-380-6042
NSN 6645-01-251-7887
NSN 5998-01-491-9146
NSN 5930-01-625-5932
NSN 5910-01-375-3437
NSN 5960-00-420-0418
NSN 6135-00-269-5843
NSN 5895-01-165-7436
NSN 5905-00-610-5698
NSN 6650-01-562-9944
NSN 6240-00-191-2855
NSN 6145-00-399-5201