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 5975-01-178-3383
NSN 5895-01-420-5970
NSN 5965-00-670-2931
NSN 6650-01-083-9706
NSN 6320-00-521-9350
NSN 5915-00-387-2076
NSN 5960-01-177-7406
NSN 6320-01-246-4390
NSN 5945-01-416-7374
NSN 5855-01-552-4759
NSN 6130-01-487-3758
NSN 5998-01-582-6894