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 6220-01-152-2637
NSN 6220-01-356-9188
NSN 5855-01-040-3882
NSN 5950-00-467-2752
NSN 6240-01-442-7746
NSN 5945-01-198-6974
NSN 5965-01-141-6485
NSN 5985-00-241-8755
NSN 6110-01-618-3219
NSN 5960-01-406-4136
NSN 5920-01-533-8881
NSN 5950-01-563-9769