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 6320-00-218-6105
NSN 6320-00-790-4844
NSN 5835-00-010-4307
NSN 5975-00-913-1894
NSN 5975-01-128-0214
NSN 5930-00-369-8411
NSN 5950-01-208-1142
NSN 5910-01-227-1939
NSN 6240-00-244-0483
NSN 6150-01-609-5759
NSN 5999-01-362-0112
NSN 6320-01-341-9126