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 6220-00-736-2617
NSN 6650-01-191-9059
NSN 5910-01-056-3655
NSN 5920-00-100-1294
NSN 4140-01-225-3637
NSN 5930-01-116-2944
NSN 5855-01-231-4945
NSN 5960-01-182-3676
NSN 5960-01-599-9821
NSN 5999-01-268-5648
NSN 5950-00-679-5928
NSN 5930-01-371-0958