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 6240-01-124-5309
NSN 6145-00-836-2241
NSN 6240-00-297-3919
NSN 5925-01-619-8550
NSN 6610-01-325-6767
NSN 5920-01-120-0798
NSN 6110-01-012-4710
NSN 6320-01-161-6640
NSN 6645-00-429-0172
NSN 5960-01-233-2756
NSN 6240-01-633-6350
NSN 5910-00-718-1473