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 4140-00-704-7615
NSN 6150-01-502-9106
NSN 5975-00-500-0166
NSN 5960-01-653-9441
NSN 5945-00-753-1054
NSN 5930-01-012-1354
NSN 6105-01-152-2800
NSN 5960-01-245-0029
NSN 6135-01-586-9728
NSN 6145-00-993-6538
NSN 2925-00-944-8398
NSN 6650-01-325-9824