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 5945-01-072-9827
NSN 5975-01-100-5681
NSN 6105-01-146-5036
NSN 6685-01-484-9826
NSN 4140-00-383-5637
NSN 6105-01-628-0605
NSN 6650-00-730-2995
NSN 5910-01-089-7080
NSN 6150-00-452-1086
NSN 5960-01-474-4843
NSN 5855-01-519-3814
NSN 5930-00-995-8653