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 6645-00-099-6913
NSN 5999-00-664-1818
NSN 6135-01-100-3593
NSN 5960-01-372-5609
NSN 2925-01-350-8372
NSN 5960-00-195-6435
NSN 6130-01-467-2820
NSN 4140-00-229-0915
NSN 6105-01-177-3985
NSN 6240-01-512-1856
NSN 6135-00-885-6003
NSN 5910-01-427-3819