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 6620-00-866-4434
NSN 6685-01-446-6580
NSN 6650-00-276-9838
NSN 5905-01-349-6826
NSN 5935-01-276-0058
NSN 4140-01-391-6462
NSN 5910-01-521-7110
NSN 4140-00-900-1816
NSN 6645-01-603-1004
NSN 5990-01-352-5255
NSN 5905-00-557-4306
NSN 6645-00-812-5243