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 5965-00-624-4134
NSN 5905-01-143-6503
NSN 5935-01-163-0453
NSN 5935-01-044-5741
NSN 5915-00-432-2993
NSN 5950-00-254-0070
NSN 5985-00-043-4512
NSN 6620-00-269-8950
NSN 5960-01-599-9821
NSN 6620-00-692-9668
NSN 5915-01-050-3683
NSN 5999-00-146-3758