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 6645-01-050-9794
NSN 5990-01-465-9235
NSN 5935-01-449-4914
NSN 6150-00-778-2850
NSN 5920-00-884-3405
NSN 5835-01-442-6482
NSN 5999-01-115-9625
NSN 4140-00-023-2597
NSN 2925-01-068-3844
NSN 5905-01-127-1861
NSN 6150-01-014-5691
NSN 7035-01-146-7096