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 5996-01-022-3284
NSN 6240-00-450-8889
NSN 5905-00-752-7360
NSN 6110-01-297-6810
NSN 5915-00-686-5941
NSN 6130-01-304-4273
NSN 5920-01-227-1877
NSN 5945-00-972-0626
NSN 5990-01-380-4884
NSN 6620-00-068-2503
NSN 5945-01-056-5035
NSN 5925-01-478-0205