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 5960-00-351-4821
NSN 5945-01-012-1752
NSN 5960-01-560-1958
NSN 5965-00-594-3115
NSN 5915-00-739-7331
NSN 6220-01-114-4688
NSN 6685-01-319-0289
NSN 5910-01-309-8567
NSN 5855-00-118-8762
NSN 5975-01-401-5355
NSN 4140-01-420-6508
NSN 6135-01-518-9813