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 6650-00-361-8222
NSN 5990-00-711-9890
NSN 6610-01-568-8732
NSN 5945-00-065-0216
NSN 5996-01-076-2938
NSN 6105-01-075-6939
NSN 4140-00-412-2408
NSN 5985-01-437-7305
NSN 5990-01-568-5565
NSN 5975-00-601-2407
NSN 6620-01-598-2271
NSN 6150-01-151-7107