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 6620-00-317-7820
NSN 5975-01-136-4988
NSN 4140-01-476-2767
NSN 6650-00-342-6447
NSN 7035-01-407-6413
NSN 6240-01-486-2913
NSN 6650-01-329-8020
NSN 6145-01-529-7653
NSN 5910-01-391-5303
NSN 6110-01-099-4334
NSN 5945-00-518-6711
NSN 6650-01-588-1732