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 5895-01-416-1900
NSN 5975-01-530-6004
NSN 5835-01-515-6537
NSN 5855-01-078-4180
NSN 6150-01-534-8917
NSN 6650-01-235-0981
NSN 5835-00-770-2843
NSN 6105-01-618-7307
NSN 4140-00-432-5593
NSN 6105-01-160-5637
NSN 6610-01-458-1988
NSN 5835-01-416-6449