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 5920-01-105-0684
NSN 5965-00-518-0958
NSN 5999-01-541-5931
NSN 5855-01-483-1350
NSN 5998-00-618-4757
NSN 5910-00-003-5842
NSN 5960-01-130-9414
NSN 5855-00-149-0766
NSN 5945-01-552-5101
NSN 6610-01-492-2630
NSN 5920-00-644-3285
NSN 2925-00-038-0596