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 6650-01-101-4339
NSN 5950-00-112-4583
NSN 5990-00-145-1187
NSN 5999-00-400-1833
NSN 5996-01-317-2515
NSN 6145-00-876-4449
NSN 6110-01-571-8717
NSN 6645-01-258-5558
NSN 5965-00-775-6496
NSN 6240-01-299-5978
NSN 7035-01-323-0164
NSN 5996-01-425-1455