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 5915-00-540-8350
NSN 5910-00-935-0337
NSN 5945-01-461-9291
NSN 6240-01-482-3275
NSN 6685-01-428-7618
NSN 6105-00-324-1030
NSN 7035-01-521-9817
NSN 6110-00-469-2517
NSN 5895-01-509-5827
NSN 6610-01-469-6235
NSN 5910-01-200-6653
NSN 5960-00-625-1842