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 5996-01-085-5031
NSN 5935-00-469-3711
NSN 5990-01-110-0157
NSN 2925-01-179-7795
NSN 6135-00-062-5080
NSN 6650-01-029-2995
NSN 6110-01-655-6364
NSN 4140-01-044-8808
NSN 5835-01-381-2683
NSN 6645-00-601-6793
NSN 6220-01-221-9429
NSN 5930-01-557-1962