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 4140-01-196-6331
NSN 6650-00-253-4783
NSN 4140-00-322-9987
NSN 5930-00-973-2402
NSN 5996-00-503-5306
NSN 7035-01-650-9059
NSN 5895-00-668-9454
NSN 5965-00-739-2063
NSN 5920-01-291-2805
NSN 7035-01-202-8172
NSN 5930-01-288-0033
NSN 5915-00-932-3040