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 5905-00-919-1766
NSN 5930-01-178-2717
NSN 5965-00-984-1393
NSN 5835-00-763-2938
NSN 5945-00-852-4896
NSN 5965-01-399-8454
NSN 5990-00-740-0249
NSN 6610-01-053-4400
NSN 6620-00-080-2847
NSN 7035-00-252-7467
NSN 5905-01-126-3634
NSN 6105-01-503-2368