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 6620-01-111-9064
NSN 2925-00-246-3077
NSN 5999-01-352-5556
NSN 6145-01-342-7763
NSN 6150-01-181-5612
NSN 6135-01-614-1355
NSN 5925-00-563-3707
NSN 5996-01-435-4121
NSN 6150-01-383-4384
NSN 5960-00-145-9361
NSN 5835-01-238-3381
NSN 5998-00-793-8137