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 5945-00-803-7288
NSN 5975-01-319-0060
NSN 6645-01-650-1860
NSN 5960-00-314-0991
NSN 5930-01-558-8750
NSN 5935-01-003-8602
NSN 5998-01-092-6692
NSN 5930-01-508-4564
NSN 6105-01-204-7176
NSN 5985-01-302-6518
NSN 5930-00-866-6888
NSN 6650-01-597-2536