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 5945-01-466-0011
NSN 6610-00-406-8544
NSN 5945-01-554-3115
NSN 5920-00-681-5722
NSN 5960-01-398-9538
NSN 5990-01-463-2279
NSN 5930-01-365-0388
NSN 6650-00-970-5598
NSN 6650-00-266-6808
NSN 4140-00-146-3269
NSN 6685-00-153-3914
NSN 2925-00-639-6677