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 5945-01-640-8591
NSN 5998-01-572-7891
NSN 5915-01-323-5383
NSN 4140-00-806-9952
NSN 5905-01-343-3585
NSN 5999-00-121-9142
NSN 7035-01-304-4138
NSN 6240-01-285-7857
NSN 4140-01-027-4116
NSN 6610-01-125-9899
NSN 5835-00-019-1816
NSN 5950-01-481-5271