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 6150-00-799-4528
NSN 6145-00-686-1195
NSN 5920-01-067-2944
NSN 6220-00-301-2098
NSN 7035-01-258-7661
NSN 5975-00-381-7186
NSN 5996-00-525-1777
NSN 5998-01-260-8587
NSN 5895-01-634-0630
NSN 5960-00-602-9906
NSN 5910-00-558-3868
NSN 5945-01-047-2795