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 6110-00-636-1234
NSN 6240-00-892-6175
NSN 6150-01-587-9409
NSN 5935-01-634-0668
NSN 6240-01-152-9015
NSN 5990-00-867-1122
NSN 5999-00-258-6777
NSN 7035-01-474-0244
NSN 6145-00-115-1845
NSN 6130-00-587-7062
NSN 5835-01-558-9444
NSN 6240-01-573-7036