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 4140-00-446-1024
NSN 6650-01-239-6241
NSN 5945-01-634-0588
NSN 5960-00-794-7463
NSN 6150-01-157-1488
NSN 4140-01-056-4453
NSN 6105-01-243-5858
NSN 5855-01-087-1417
NSN 6645-01-122-8306
NSN 6620-01-462-5196
NSN 5960-00-274-4905
NSN 2925-01-633-4048