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 6610-00-222-1393
NSN 5985-01-644-2832
NSN 4140-01-221-2513
NSN 6110-01-273-7856
NSN 5905-00-363-9689
NSN 6220-00-338-1086
NSN 5920-00-675-4952
NSN 5985-01-544-2500
NSN 6620-01-654-3830
NSN 6650-01-376-6965
NSN 6135-00-209-6918
NSN 6650-01-426-4253