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 6145-00-752-2377
NSN 6620-00-837-9484
NSN 5935-01-390-8936
NSN 5945-00-590-5939
NSN 5990-00-589-1291
NSN 6320-01-119-3935
NSN 5998-01-082-2104
NSN 4140-01-450-6405
NSN 5945-00-378-0281
NSN 5950-01-546-0895
NSN 5960-00-652-1829
NSN 5975-01-258-5568