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 6650-01-207-0039
NSN 5996-00-363-9666
NSN 6135-00-874-6566
NSN 5905-01-462-0057
NSN 5975-00-082-0894
NSN 5960-00-726-0580
NSN 5965-00-167-1255
NSN 6105-01-410-8948
NSN 5960-01-599-9821
NSN 5925-01-299-1373
NSN 5996-00-005-7979
NSN 6650-01-193-8983