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 5915-00-520-9679
NSN 6620-01-504-5756
NSN 2925-01-508-4138
NSN 5925-01-266-1093
NSN 6135-01-589-0333
NSN 5965-00-879-7287
NSN 5996-00-264-8929
NSN 6105-01-473-0613
NSN 5960-00-085-3995
NSN 5999-00-420-8284
NSN 6110-01-446-9875
NSN 5935-01-615-8902