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 7035-01-579-4771
NSN 5915-01-392-9549
NSN 6150-00-734-5281
NSN 4140-01-075-5455
NSN 6620-00-280-2874
NSN 6620-01-192-0543
NSN 5945-01-417-3059
NSN 5960-00-539-7914
NSN 6650-00-614-1711
NSN 5835-01-219-0586
NSN 5855-01-538-8121
NSN 6685-00-531-7120