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 2925-00-258-9786
NSN 6320-01-425-1417
NSN 5998-00-803-3067
NSN 5935-01-293-3454
NSN 5910-01-435-6053
NSN 5935-01-514-6918
NSN 5920-01-629-5424
NSN 4140-01-326-5730
NSN 6220-01-641-1319
NSN 6645-00-160-0503
NSN 6650-01-225-0176
NSN 5998-00-499-1773