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 5998-01-312-4378
NSN 4140-01-109-6834
NSN 6650-01-050-4809
NSN 5935-01-579-2348
NSN 6320-01-523-4954
NSN 6145-00-903-4619
NSN 5996-00-913-9681
NSN 5990-01-367-7804
NSN 6220-00-107-1835
NSN 5835-01-187-8986
NSN 5905-00-274-3789
NSN 5915-00-501-8579