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 5999-00-377-5726
NSN 5960-01-104-7839
NSN 5935-01-273-2006
NSN 5910-01-108-2873
NSN 5920-01-126-6722
NSN 6150-01-116-2406
NSN 5996-01-654-3472
NSN 5998-00-850-2363
NSN 6620-01-222-7703
NSN 6130-01-324-9652
NSN 5925-00-998-7441
NSN 6145-01-634-0388