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 6645-01-063-5383
NSN 6620-01-246-4314
NSN 6130-01-394-4153
NSN 6130-01-305-7102
NSN 5945-01-640-6663
NSN 5910-00-279-1981
NSN 5960-01-512-0233
NSN 5925-00-494-4685
NSN 5925-01-595-2396
NSN 6110-00-911-4000
NSN 5945-00-397-5806
NSN 6150-01-242-9828