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 6145-01-579-1851
NSN 6150-01-192-5580
NSN 5998-01-352-5411
NSN 6220-01-345-2845
NSN 5930-01-495-1925
NSN 5915-01-417-0875
NSN 6105-01-268-6649
NSN 5945-01-465-1945
NSN 5985-01-557-0041
NSN 5855-01-632-4784
NSN 4140-00-967-2070
NSN 5835-01-550-1577