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 5905-00-237-0838
NSN 6240-01-184-6831
NSN 5996-01-633-7979
NSN 5920-01-074-6865
NSN 6110-01-090-0804
NSN 5930-01-556-7026
NSN 6320-01-072-2073
NSN 5960-00-573-8985
NSN 5915-01-089-9836
NSN 5965-01-422-4823
NSN 5998-01-379-6374
NSN 5920-01-112-4368