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 5998-00-308-8031
NSN 5965-00-170-5254
NSN 5895-01-376-0482
NSN 7035-01-145-5059
NSN 5935-00-187-7102
NSN 5920-01-188-2400
NSN 6645-00-004-0510
NSN 5990-01-503-9804
NSN 6220-01-178-6843
NSN 5915-00-276-8332
NSN 4140-00-602-5973
NSN 6130-01-515-2833