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 5905-01-070-1630
NSN 6320-01-154-1099
NSN 6620-00-030-7759
NSN 5835-01-085-5487
NSN 4140-01-497-1840
NSN 5999-01-350-0677
NSN 5930-01-044-6467
NSN 5935-01-169-9977
NSN 5945-01-471-5965
NSN 6650-00-095-6490
NSN 6130-00-469-4604
NSN 6620-01-533-1059