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 5930-00-945-6009
NSN 5945-01-248-5908
NSN 5965-01-321-1910
NSN 5950-00-777-8199
NSN 5930-01-377-4318
NSN 5945-00-600-2527
NSN 5920-00-776-0633
NSN 5996-01-400-3558
NSN 5945-00-950-6289
NSN 6135-01-486-1443
NSN 6650-01-237-1105
NSN 6220-01-079-9869