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 6150-01-252-8527
NSN 5930-01-488-6687
NSN 6650-00-269-5000
NSN 5990-01-052-9343
NSN 4140-00-269-8545
NSN 5999-01-204-3769
NSN 5905-01-012-2520
NSN 5935-01-264-8336
NSN 5895-01-363-4735
NSN 6320-01-094-2634
NSN 5945-00-409-3883
NSN 6110-01-381-0469