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 5910-01-258-7094
NSN 6105-01-186-6988
NSN 5915-01-508-2532
NSN 5930-00-400-3390
NSN 5985-01-413-1257
NSN 6145-01-450-3653
NSN 5935-01-114-6810
NSN 6220-01-502-8991
NSN 5985-01-050-8609
NSN 4140-00-358-9965
NSN 5990-00-459-5752
NSN 6320-01-143-3597