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 6220-01-166-3696
NSN 5960-00-038-5433
NSN 5920-00-263-0622
NSN 4140-01-621-0256
NSN 5999-00-708-7542
NSN 6620-01-070-2215
NSN 6620-00-292-7000
NSN 5965-01-234-6844
NSN 5999-00-145-3878
NSN 6150-00-823-5590
NSN 6105-01-648-2644
NSN 6110-00-849-9930