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 5895-01-174-9168
NSN 6220-00-285-8104
NSN 5905-00-753-0299
NSN 6145-01-442-0621
NSN 5965-01-341-8746
NSN 6650-00-717-8913
NSN 5965-01-209-2838
NSN 6685-01-411-2717
NSN 5975-01-488-4462
NSN 6145-01-331-3287
NSN 4140-01-531-7375
NSN 6130-01-425-1459