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 5835-01-629-2044
NSN 6105-01-050-7795
NSN 5960-01-037-6570
NSN 6620-00-596-1951
NSN 5990-01-216-0148
NSN 4140-01-066-7975
NSN 5855-00-482-9876
NSN 5930-01-571-7611
NSN 5990-00-591-3793
NSN 5960-00-740-1369
NSN 6220-01-358-7107
NSN 6650-00-438-3983