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 4140-01-290-4026
NSN 2925-01-612-0405
NSN 6110-00-964-3514
NSN 6320-00-583-3105
NSN 6240-00-191-2855
NSN 6220-01-592-3976
NSN 6610-01-362-8686
NSN 5998-01-395-5967
NSN 5930-00-883-7016
NSN 5990-01-353-6444
NSN 2925-00-026-0005
NSN 5925-01-063-7107