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 5975-01-359-2679
NSN 5930-00-383-1539
NSN 5835-00-406-8460
NSN 6150-00-972-8063
NSN 6645-00-270-6817
NSN 6220-01-368-6879
NSN 5999-01-389-0922
NSN 5915-00-740-4336
NSN 5965-01-107-8549
NSN 6130-00-639-0666
NSN 5835-01-362-0305
NSN 7035-01-519-8227