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 5930-01-314-3824
NSN 5990-00-082-3107
NSN 6145-01-305-3582
NSN 5965-01-344-5467
NSN 5930-00-636-3671
NSN 5965-01-078-5797
NSN 4140-00-542-4550
NSN 5996-01-155-2467
NSN 5930-01-389-8674
NSN 5985-01-245-4704
NSN 5990-01-434-7913
NSN 5945-01-535-3698