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 5835-00-422-1441
NSN 5975-00-946-5324
NSN 5965-00-119-6207
NSN 7035-00-981-7216
NSN 5935-01-169-0109
NSN 5990-00-606-8299
NSN 5915-01-549-1506
NSN 5960-00-054-1987
NSN 6650-01-462-5405
NSN 5998-01-264-9904
NSN 6320-01-592-6248
NSN 5996-00-974-6203