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 6130-01-513-6388
NSN 6320-01-374-9924
NSN 4140-01-218-4999
NSN 4140-01-143-9661
NSN 5965-01-323-8134
NSN 5920-01-246-3652
NSN 5835-00-233-6327
NSN 6650-01-284-6536
NSN 5996-00-548-5179
NSN 5935-01-108-3068
NSN 6650-01-068-5021
NSN 6105-01-430-2227