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 5998-01-158-0287
NSN 6620-01-026-7371
NSN 5895-00-628-2078
NSN 5935-00-142-0880
NSN 5998-01-419-5971
NSN 6110-01-651-0523
NSN 6150-00-753-3950
NSN 5855-01-330-1918
NSN 4140-00-274-9638
NSN 4140-01-468-0476
NSN 5930-01-444-4074
NSN 6645-01-040-8337