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 6135-01-572-9340
NSN 4140-00-213-9937
NSN 5935-00-399-5154
NSN 5998-00-185-8107
NSN 5960-01-512-0233
NSN 5965-01-101-7624
NSN 5996-00-407-4661
NSN 5925-01-358-8434
NSN 6650-01-169-5247
NSN 6650-01-161-1624
NSN 5960-01-014-1595
NSN 6650-01-423-2834