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 5990-01-074-6549
NSN 6240-01-398-6049
NSN 5975-01-633-8988
NSN 5835-01-383-1313
NSN 6620-01-169-9470
NSN 6105-01-400-4194
NSN 5910-01-562-3887
NSN 5945-01-501-4872
NSN 6105-00-256-3830
NSN 5998-01-089-8700
NSN 5855-00-411-8688
NSN 6620-00-193-0518