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 6645-01-564-7129
NSN 6105-01-249-2538
NSN 5998-01-207-1651
NSN 6650-01-515-0391
NSN 6145-01-094-6108
NSN 5965-01-437-5934
NSN 5835-00-927-6013
NSN 5915-01-196-6016
NSN 6150-01-370-1356
NSN 5835-00-711-3371
NSN 6150-01-123-7612
NSN 5910-00-916-3986