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 6240-01-339-2411
NSN 5945-01-386-6176
NSN 5915-01-256-2584
NSN 4140-01-231-5031
NSN 5985-01-508-3594
NSN 4140-00-905-6570
NSN 7035-00-205-1932
NSN 5975-01-177-0438
NSN 5975-01-540-8142
NSN 5935-00-922-8596
NSN 6105-00-909-6123
NSN 5985-01-330-4026