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 6135-01-449-2144
NSN 5915-01-509-1540
NSN 5935-01-561-5207
NSN 5895-01-382-4719
NSN 6220-01-572-2470
NSN 6650-01-644-2547
NSN 5950-01-236-4400
NSN 4140-01-347-6503
NSN 6645-01-095-9681
NSN 5895-00-539-8322
NSN 6650-00-195-7519
NSN 6620-01-144-2488