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 5990-01-168-0820
NSN 5996-01-423-9423
NSN 6650-01-447-2858
NSN 6240-00-928-5911
NSN 5920-01-323-7645
NSN 5935-01-361-8391
NSN 6220-01-366-5296
NSN 6650-01-073-1564
NSN 6130-00-167-7584
NSN 5935-00-694-2762
NSN 5945-01-629-2566
NSN 5965-01-500-1840