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 6145-01-145-0851
NSN 5855-01-245-8689
NSN 5996-01-469-0852
NSN 5960-01-086-6736
NSN 5945-01-449-1281
NSN 7035-00-483-6617
NSN 5996-00-856-5810
NSN 5920-01-146-3603
NSN 5935-01-050-9171
NSN 6150-00-734-5281
NSN 6150-00-341-3860
NSN 5835-01-481-4204