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 5835-00-764-4388
NSN 4140-01-634-0330
NSN 5999-01-411-5135
NSN 5945-01-139-5179
NSN 6650-00-025-0169
NSN 6150-00-339-1336
NSN 6650-01-358-2827
NSN 5935-01-249-3102
NSN 6645-01-544-9475
NSN 6645-00-415-9018
NSN 5990-01-338-2103
NSN 5945-01-044-5155