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 5910-01-258-4887
NSN 5975-01-490-1496
NSN 6130-01-198-3770
NSN 5855-00-631-4565
NSN 5985-01-534-3420
NSN 4140-01-624-0444
NSN 6650-01-235-0981
NSN 5935-01-412-3847
NSN 5835-01-426-6573
NSN 5835-00-941-4959
NSN 5935-01-389-0030
NSN 5998-00-232-2137