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 5960-01-502-6270
NSN 6240-00-450-8889
NSN 6220-01-143-3406
NSN 5930-01-363-7993
NSN 5990-01-449-7090
NSN 5998-01-274-7665
NSN 5999-01-385-0728
NSN 5905-01-179-5141
NSN 5915-01-129-5988
NSN 6610-01-496-9860
NSN 5835-00-681-0005
NSN 4140-00-121-6746