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 7035-01-198-1512
NSN 5965-01-063-7894
NSN 6105-00-196-4957
NSN 6620-01-517-0014
NSN 6135-00-906-0984
NSN 6150-00-995-5603
NSN 6240-01-532-0671
NSN 5905-01-417-3141
NSN 6650-01-652-6067
NSN 5960-01-170-4057
NSN 5950-01-407-1090
NSN 5998-01-081-0357