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 5930-01-047-9106
NSN 6320-01-078-8257
NSN 5905-01-487-7452
NSN 5855-01-384-4914
NSN 6105-01-492-2086
NSN 5985-01-598-7137
NSN 5950-00-717-4339
NSN 5985-01-385-4647
NSN 5835-01-321-7895
NSN 5930-00-508-0104
NSN 6645-00-780-5260
NSN 5998-01-508-6781