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 5905-01-370-2960
NSN 5915-01-136-8642
NSN 7035-00-884-8366
NSN 5999-00-469-2741
NSN 5835-01-116-2369
NSN 6145-01-141-0214
NSN 6645-00-258-8547
NSN 6620-00-829-1914
NSN 5950-01-449-0943
NSN 6645-00-629-9367
NSN 5950-00-137-2985
NSN 6150-01-400-4211