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 6135-01-322-4655
NSN 4140-01-117-5698
NSN 5835-00-128-8762
NSN 5910-00-140-6980
NSN 5835-00-284-0882
NSN 6145-01-110-2746
NSN 5835-01-396-0640
NSN 5990-01-432-4249
NSN 5965-01-201-8399
NSN 5985-01-523-6060
NSN 6320-00-468-8421
NSN 5855-01-513-9601