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 6650-01-545-2432
NSN 7035-01-376-0359
NSN 5910-01-593-3960
NSN 6150-00-100-1302
NSN 6240-01-062-0878
NSN 5960-01-022-5288
NSN 5999-01-579-3601
NSN 6620-00-153-0982
NSN 6320-01-198-4024
NSN 5965-01-437-0905
NSN 6610-00-466-3104
NSN 5835-00-523-0736