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 5990-01-601-7332
NSN 5945-01-123-7793
NSN 6610-01-462-9439
NSN 5965-00-984-1393
NSN 5975-01-362-0168
NSN 5895-01-640-7792
NSN 6620-01-542-8709
NSN 5910-00-101-2253
NSN 6610-00-814-8598
NSN 4140-00-470-4707
NSN 6220-00-141-0268
NSN 7035-01-586-7715