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 5915-01-412-8667
NSN 5998-01-306-3380
NSN 6150-01-113-8204
NSN 6110-01-198-1557
NSN 5835-00-823-6116
NSN 5905-01-584-3790
NSN 5960-00-936-7931
NSN 5835-00-649-9402
NSN 6650-00-526-7785
NSN 5996-00-824-5943
NSN 5920-01-567-3702
NSN 5935-01-626-1088