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 5910-00-155-4763
NSN 5835-01-324-3967
NSN 5925-01-335-8933
NSN 5915-00-365-9951
NSN 6320-01-532-6746
NSN 4140-01-312-2361
NSN 5990-01-534-8609
NSN 5915-01-431-9235
NSN 4140-01-509-8685
NSN 6650-01-349-6097
NSN 5985-01-560-6431
NSN 6620-00-932-6508