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 5998-00-209-9077
NSN 5910-01-488-7784
NSN 6650-00-451-8174
NSN 5945-01-576-7201
NSN 6105-00-836-9331
NSN 6320-00-160-0899
NSN 6240-01-279-3614
NSN 5990-01-095-8866
NSN 5965-01-046-9619
NSN 6130-01-369-8017
NSN 7035-00-104-7613
NSN 5910-01-422-4645