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 6150-00-153-0298
NSN 5910-01-146-4784
NSN 5998-01-178-4166
NSN 5835-01-632-6627
NSN 6220-01-092-5177
NSN 5975-00-148-0914
NSN 6650-00-404-6473
NSN 5855-01-325-9507
NSN 6610-00-963-9435
NSN 6145-00-278-0697
NSN 5925-01-223-9339
NSN 5935-01-533-7265