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 6320-00-456-0836
NSN 5945-00-375-8361
NSN 5999-00-474-7704
NSN 5930-01-370-0266
NSN 5835-01-279-9508
NSN 5950-00-170-8477
NSN 5910-01-310-3662
NSN 5855-00-631-4565
NSN 5905-01-262-4597
NSN 5905-01-068-4582
NSN 5998-01-437-9889
NSN 5950-01-512-5101