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 6145-01-278-8925
NSN 6610-00-880-1914
NSN 6220-01-211-7888
NSN 4140-01-047-4093
NSN 5910-00-643-7233
NSN 6320-00-070-4544
NSN 5990-01-245-7299
NSN 5960-01-058-8582
NSN 5950-00-938-0363
NSN 5998-01-155-8284
NSN 2925-00-612-0983
NSN 5990-01-591-8797