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 5835-01-158-6878
NSN 5998-01-078-9797
NSN 5999-01-096-0758
NSN 7035-01-512-1826
NSN 5915-01-411-6933
NSN 5945-01-331-4574
NSN 5895-01-139-3579
NSN 5930-01-101-5151
NSN 6150-01-483-6740
NSN 5920-00-722-4894
NSN 6610-00-322-9686
NSN 5985-01-391-5404