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 6130-01-476-8857
NSN 5895-01-482-9824
NSN 6135-01-383-0151
NSN 5930-01-421-4957
NSN 6320-00-481-7291
NSN 6130-00-305-1052
NSN 5950-00-180-9943
NSN 5920-01-602-9357
NSN 4140-01-550-7569
NSN 6145-01-485-4690
NSN 2925-00-566-4522
NSN 6240-01-633-2239