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 5945-00-932-8059
NSN 4140-00-373-4833
NSN 5975-01-459-8399
NSN 5855-01-268-6468
NSN 6220-00-492-1775
NSN 6105-01-040-8242
NSN 5960-00-508-1913
NSN 6320-01-495-1244
NSN 6320-01-425-1417
NSN 6105-00-991-1844
NSN 5945-00-666-4700
NSN 6220-00-409-4304