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 5950-01-273-3818
NSN 5945-01-185-5269
NSN 6650-01-491-0246
NSN 5999-00-193-8398
NSN 4140-00-998-7691
NSN 5990-01-066-5227
NSN 2925-01-196-6187
NSN 5998-00-244-6520
NSN 5930-01-656-6818
NSN 5915-01-249-6448
NSN 7035-01-369-1445
NSN 5960-01-178-7500