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 5920-00-215-5642
NSN 5855-01-286-9928
NSN 5855-01-472-1946
NSN 5910-00-895-9736
NSN 5975-01-277-6344
NSN 7035-01-529-2049
NSN 6145-00-043-1258
NSN 6150-01-649-3598
NSN 6320-01-496-9907
NSN 6650-01-365-1894
NSN 5960-01-111-9918
NSN 6620-01-147-0441