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 6610-00-242-0609
NSN 7035-01-380-0547
NSN 4140-01-482-0163
NSN 6645-01-386-6311
NSN 5910-01-650-5882
NSN 5925-01-211-6660
NSN 5998-01-634-0604
NSN 5996-00-401-4502
NSN 7035-00-500-7839
NSN 7035-01-242-6496
NSN 5960-01-142-1995
NSN 6320-01-449-1014