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 6150-00-189-0292
NSN 6110-01-619-0634
NSN 7035-00-803-3056
NSN 6130-01-645-8882
NSN 5990-01-651-6364
NSN 5999-01-476-8123
NSN 5945-01-535-9518
NSN 6610-01-188-8163
NSN 6610-00-021-2259
NSN 5998-01-338-8719
NSN 6620-01-572-3510
NSN 5999-00-136-8446