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 6620-00-383-8740
NSN 6645-00-144-4868
NSN 6110-01-399-8109
NSN 4140-00-223-7492
NSN 5835-01-476-8210
NSN 5960-00-147-0519
NSN 5998-01-491-6259
NSN 6220-00-758-2378
NSN 5935-00-412-1371
NSN 5960-00-009-8082
NSN 6220-01-395-0662
NSN 6220-01-088-6604