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 6150-01-245-7365
NSN 6110-01-007-5499
NSN 7035-00-349-8571
NSN 5895-01-491-8886
NSN 5835-00-034-4976
NSN 5925-00-089-3278
NSN 5999-00-282-3150
NSN 5990-01-172-4553
NSN 6110-01-258-3626
NSN 6320-01-089-9086
NSN 6145-01-626-3387
NSN 6240-00-170-5302