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 5985-00-227-4232
NSN 5935-01-420-6452
NSN 6650-00-879-5834
NSN 6110-01-453-7473
NSN 5945-01-162-6243
NSN 5910-00-473-3851
NSN 6645-01-327-7362
NSN 6620-00-765-5794
NSN 6645-01-338-1423
NSN 5998-00-155-6002
NSN 4140-01-400-3610
NSN 5910-01-556-8008