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 5960-00-677-7444
NSN 5835-01-436-6549
NSN 6110-01-290-1652
NSN 5920-01-498-1972
NSN 5835-01-519-3834
NSN 5996-00-852-1730
NSN 5930-01-555-3864
NSN 6145-01-441-2630
NSN 5975-00-197-6515
NSN 5960-00-553-5792
NSN 6240-01-608-9077
NSN 5945-01-199-9108