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 6610-01-089-2487
NSN 5945-00-351-0099
NSN 5965-01-281-0458
NSN 6130-00-530-3737
NSN 6110-01-087-5286
NSN 5960-00-945-1833
NSN 5990-01-097-4721
NSN 5905-01-196-6154
NSN 5935-00-959-6853
NSN 5910-00-376-9768
NSN 6110-00-581-4445
NSN 6620-01-365-1499