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 6650-01-501-7061
NSN 5950-01-089-9860
NSN 5895-00-194-0658
NSN 4140-01-580-2166
NSN 5985-00-368-7198
NSN 6240-00-115-2251
NSN 5920-01-056-4746
NSN 5999-01-423-8249
NSN 6320-00-284-1524
NSN 6135-01-110-9470
NSN 5999-01-160-7905
NSN 5935-01-353-3166