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 6610-00-343-9331
NSN 5998-00-375-1326
NSN 6320-00-908-6841
NSN 6145-00-112-1449
NSN 6220-01-021-8738
NSN 6220-01-278-5803
NSN 5990-01-357-6175
NSN 6320-01-019-1028
NSN 7035-01-398-1655
NSN 6105-01-317-1195
NSN 6685-01-384-3062
NSN 5975-00-917-4430