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 5998-01-256-7936
NSN 6150-00-729-9420
NSN 5920-01-480-7007
NSN 5930-01-468-0928
NSN 6240-00-922-6173
NSN 5895-01-205-8963
NSN 6150-01-146-9014
NSN 6650-01-502-7316
NSN 6110-00-616-4300
NSN 5950-00-248-6921
NSN 5920-00-432-1515
NSN 5895-01-100-3759