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 6220-01-529-6728
NSN 6650-00-942-8931
NSN 5990-01-240-1100
NSN 5965-01-283-2531
NSN 5960-00-338-9164
NSN 5965-00-179-3789
NSN 6320-01-322-8340
NSN 6320-01-380-0561
NSN 5915-00-189-7514
NSN 5910-01-365-8031
NSN 5965-01-485-9539
NSN 5945-01-446-0954