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 5930-01-527-8684
NSN 5905-00-410-1766
NSN 5945-01-380-7780
NSN 5855-01-280-9735
NSN 6145-00-149-9195
NSN 5945-01-150-6501
NSN 6620-01-514-2949
NSN 5945-00-773-9773
NSN 5905-00-301-3689
NSN 6645-01-245-8390
NSN 6620-01-278-8028
NSN 5920-01-491-5550