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 5910-01-014-5944
NSN 6650-00-629-8027
NSN 6135-00-321-6707
NSN 6220-01-605-1346
NSN 6105-01-255-4028
NSN 5915-01-325-8861
NSN 5925-00-786-8123
NSN 5996-01-381-0711
NSN 5975-00-623-6460
NSN 5996-00-842-2023
NSN 5935-01-502-2737
NSN 6110-01-456-1985