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 6685-01-285-0323
NSN 6105-01-622-0674
NSN 5835-00-180-7555
NSN 5960-01-344-2604
NSN 6240-01-395-8300
NSN 6685-01-014-3150
NSN 6645-00-664-4665
NSN 5915-00-081-7815
NSN 5835-01-566-5462
NSN 6320-01-412-2973
NSN 6105-01-370-4267
NSN 5895-01-094-9650