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 4140-01-089-9724
NSN 5996-01-187-0838
NSN 5965-01-324-5898
NSN 6650-01-122-0169
NSN 5920-01-029-3813
NSN 5975-01-223-7936
NSN 2925-01-058-1718
NSN 5960-01-051-9405
NSN 6110-01-483-0639
NSN 5960-01-020-2841
NSN 5935-01-397-5062
NSN 6105-00-099-8818