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 6650-00-232-7901
NSN 5895-01-586-3616
NSN 5945-01-276-0097
NSN 5915-00-897-1701
NSN 6145-01-536-9899
NSN 4140-01-248-7899
NSN 6130-01-290-8072
NSN 5985-01-550-0322
NSN 5999-00-305-6732
NSN 5950-01-112-1172
NSN 5945-01-378-7603
NSN 5999-01-618-0559