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 5990-00-972-1404
NSN 5835-01-406-4066
NSN 5910-00-340-5375
NSN 5950-01-023-8842
NSN 6150-01-325-0156
NSN 5990-01-089-2652
NSN 6620-00-663-6026
NSN 5960-00-081-2559
NSN 5930-00-482-2386
NSN 6150-01-641-8232
NSN 6620-00-591-4029
NSN 6220-00-489-1440