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 6105-01-537-0830
NSN 5930-01-500-7754
NSN 5999-00-911-4621
NSN 6105-01-068-8143
NSN 5996-01-629-9093
NSN 6135-01-357-0621
NSN 5925-00-177-4654
NSN 6650-01-399-8552
NSN 6220-01-317-9665
NSN 5925-01-091-4577
NSN 5910-01-041-7432
NSN 6610-01-359-9962