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 5960-01-513-3230
NSN 5950-01-014-5589
NSN 5990-00-060-7009
NSN 5915-01-432-2491
NSN 5945-00-241-6252
NSN 4140-01-330-8141
NSN 6645-01-231-9891
NSN 5925-01-550-4481
NSN 6105-00-615-9979
NSN 6145-01-317-2226
NSN 5985-01-368-3913
NSN 4140-01-098-4677