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 5945-00-035-4439
NSN 5945-01-125-2417
NSN 5855-01-634-0259
NSN 6110-01-235-9175
NSN 6610-01-376-9199
NSN 6320-01-261-5983
NSN 5960-01-546-2379
NSN 5895-00-357-6309
NSN 6105-01-209-0760
NSN 6320-01-425-1417
NSN 6135-00-455-2425
NSN 5965-00-188-5531