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 5910-01-115-4162
NSN 5925-01-372-0863
NSN 6610-01-574-2429
NSN 5930-00-258-5464
NSN 5999-01-426-8740
NSN 5935-00-637-2643
NSN 5895-00-484-1496
NSN 5935-00-616-2809
NSN 6620-01-288-4922
NSN 5945-01-658-3651
NSN 6145-00-964-0665
NSN 5999-01-392-8746