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 5930-01-444-1324
NSN 6130-01-182-4555
NSN 5855-00-832-9341
NSN 6650-00-001-2472
NSN 5998-00-686-2152
NSN 6220-00-252-7673
NSN 5999-00-823-6151
NSN 5915-01-537-2662
NSN 5925-00-515-2438
NSN 6320-01-558-8844
NSN 5950-00-396-7574
NSN 4140-01-243-5817