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 6150-01-161-9424
NSN 5990-01-348-9829
NSN 5920-01-634-0250
NSN 6130-00-415-1509
NSN 6320-01-519-8767
NSN 6320-00-456-2092
NSN 6105-00-099-8818
NSN 5930-01-495-1925
NSN 4140-00-989-3257
NSN 5895-01-273-3919
NSN 6320-01-388-9450
NSN 5925-01-206-5484