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 6610-01-167-1771
NSN 2925-00-453-4100
NSN 5915-01-270-0762
NSN 5915-00-132-5531
NSN 5935-01-531-3481
NSN 6650-01-154-1870
NSN 5935-01-653-5097
NSN 6620-01-259-5944
NSN 5920-01-425-4322
NSN 6105-01-436-7736
NSN 5999-00-941-2114
NSN 6650-01-358-7055