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 5975-00-456-7715
NSN 5960-00-884-2535
NSN 5905-01-370-4989
NSN 5996-01-478-9147
NSN 5910-01-450-9289
NSN 6130-00-688-7085
NSN 7035-00-470-4977
NSN 6110-00-446-1045
NSN 5915-00-882-9456
NSN 5910-01-429-7590
NSN 5965-01-526-2087
NSN 5999-00-067-5851