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 6620-01-163-3329
NSN 5915-00-523-1968
NSN 4140-01-209-2668
NSN 5920-01-583-5670
NSN 5920-01-101-7987
NSN 5930-01-441-8055
NSN 6150-00-151-6771
NSN 5835-01-058-0233
NSN 6220-01-374-6667
NSN 5950-01-600-1432
NSN 6135-01-389-2040
NSN 5996-01-079-2738