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 4140-01-388-2007
NSN 5935-01-538-6838
NSN 5925-00-248-5734
NSN 5990-00-713-1881
NSN 5990-01-264-9759
NSN 5895-00-707-3386
NSN 2925-01-387-0870
NSN 5960-01-278-2416
NSN 6610-01-603-0703
NSN 5965-00-934-3495
NSN 5910-00-486-7093
NSN 5945-01-281-7404