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 5925-01-406-4093
NSN 6240-01-129-7060
NSN 5960-00-906-2149
NSN 6150-00-647-3285
NSN 5945-00-643-9759
NSN 7035-01-152-7331
NSN 6650-01-190-7050
NSN 6650-01-510-9488
NSN 6135-01-282-4326
NSN 5999-01-467-6318
NSN 6145-01-589-9721
NSN 6320-00-242-3300