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 2925-00-831-7024
NSN 6130-01-015-9184
NSN 5996-01-139-2843
NSN 6145-00-515-6931
NSN 6145-01-125-0974
NSN 6620-01-187-7267
NSN 5915-00-068-8329
NSN 6105-01-443-2980
NSN 5920-01-492-5788
NSN 6135-01-633-8502
NSN 2925-00-290-7052
NSN 4140-01-552-3652