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 5835-01-447-2544
NSN 5985-01-497-0222
NSN 6320-01-233-5798
NSN 6650-01-039-9340
NSN 5930-00-794-7873
NSN 5935-00-691-3652
NSN 5990-01-083-9013
NSN 5996-00-471-0540
NSN 5910-01-531-8685
NSN 2925-00-185-1618
NSN 5996-00-593-6973
NSN 5965-01-549-6390