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 5998-01-145-8700
NSN 6645-01-095-9681
NSN 6130-01-441-7057
NSN 5855-00-179-8588
NSN 6105-01-146-6945
NSN 5996-01-463-8197
NSN 5930-00-138-2316
NSN 5950-01-469-9047
NSN 5950-00-484-5296
NSN 5960-01-391-4701
NSN 7035-01-551-9668
NSN 5998-00-263-4541