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 6110-01-173-8077
NSN 6110-00-055-8973
NSN 6150-00-570-0552
NSN 5975-01-629-0227
NSN 6320-00-779-5923
NSN 2925-01-179-7795
NSN 6150-01-188-8232
NSN 5930-01-411-6344
NSN 6320-00-546-9249
NSN 6105-00-686-5995
NSN 6150-01-321-9912
NSN 6150-00-127-3833