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 5999-01-606-6350
NSN 6150-01-143-9543
NSN 5945-01-569-6674
NSN 5835-01-231-4994
NSN 5960-00-431-8739
NSN 5990-01-016-0245
NSN 5990-00-451-7630
NSN 5910-01-188-6858
NSN 6240-01-383-1576
NSN 5855-01-284-3500
NSN 6620-00-466-2314
NSN 5895-01-178-8889