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 5990-01-632-0969
NSN 5960-01-027-1835
NSN 6645-01-422-1374
NSN 6105-00-839-8336
NSN 5935-01-586-0151
NSN 6650-01-207-0829
NSN 7035-01-432-7705
NSN 6105-00-669-6462
NSN 6650-00-547-4557
NSN 5945-00-893-0401
NSN 6105-01-089-6768
NSN 6105-00-954-0757