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 5960-00-111-4305
NSN 6620-01-302-9729
NSN 5960-01-294-2397
NSN 6620-00-079-4615
NSN 5920-01-348-8736
NSN 6145-01-559-9793
NSN 6320-00-456-0836
NSN 5905-01-486-0416
NSN 5990-01-193-0487
NSN 5990-00-615-7111
NSN 6650-01-488-6418
NSN 5996-01-616-0401