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 5999-01-373-6740
NSN 6145-01-606-6970
NSN 5835-00-231-9544
NSN 4140-00-326-5891
NSN 5998-01-037-0622
NSN 5915-01-006-7821
NSN 6145-01-362-8000
NSN 6135-01-604-8739
NSN 6110-00-596-9124
NSN 6320-01-429-4279
NSN 6650-01-269-6817
NSN 5950-01-429-9726