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 6320-01-631-7828
NSN 5855-00-118-8762
NSN 5920-01-148-1042
NSN 6130-01-634-0603
NSN 6320-01-185-3857
NSN 6650-01-119-3058
NSN 5996-01-432-2356
NSN 5965-01-060-2558
NSN 5975-01-100-1063
NSN 5975-00-050-3729
NSN 6130-00-295-2758
NSN 6610-01-265-1824