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 6105-01-170-1139
NSN 6620-01-106-2814
NSN 5920-01-435-5091
NSN 6105-01-616-4504
NSN 5855-00-991-0096
NSN 5960-00-759-2534
NSN 5985-00-791-1777
NSN 6220-01-287-3942
NSN 5920-01-352-3625
NSN 5835-01-456-3922
NSN 5915-01-560-6795
NSN 6650-01-534-2391