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 6150-01-363-2798
NSN 6110-01-606-3584
NSN 6320-00-284-1524
NSN 5960-00-774-9468
NSN 5998-00-816-9752
NSN 5925-01-476-5666
NSN 5975-01-514-6629
NSN 5935-01-242-3687
NSN 5895-01-008-0682
NSN 5835-00-387-4759
NSN 5945-01-545-0933
NSN 5910-00-604-0334