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 5998-01-125-7417
NSN 6105-01-291-3515
NSN 5960-01-141-1528
NSN 5990-01-232-9008
NSN 6620-00-446-8048
NSN 6240-01-045-7755
NSN 6105-00-767-3686
NSN 5835-00-503-1638
NSN 5935-00-419-5561
NSN 5999-00-618-1040
NSN 5920-01-375-0651
NSN 5996-00-971-2283