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 6240-01-017-4289
NSN 5835-01-386-4027
NSN 5998-00-013-6913
NSN 6240-00-145-8167
NSN 5895-00-725-2702
NSN 5945-00-827-1000
NSN 5960-00-806-5614
NSN 6610-00-913-7069
NSN 5855-01-481-0819
NSN 7035-01-265-0216
NSN 4140-01-240-4616
NSN 6610-01-415-1623