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 5895-01-445-5526
NSN 5960-01-539-1956
NSN 6650-01-468-6889
NSN 5999-00-433-9128
NSN 5835-01-602-0311
NSN 5990-01-092-1963
NSN 6220-01-348-4739
NSN 6650-01-511-5262
NSN 5895-01-391-7671
NSN 5999-01-264-2621
NSN 2925-01-032-3814
NSN 6240-01-412-0063