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 6150-01-211-7883
NSN 5960-00-030-5485
NSN 5920-01-346-1208
NSN 5930-01-603-3572
NSN 6320-00-400-8042
NSN 5945-01-133-6985
NSN 5915-01-377-5881
NSN 4140-01-546-7764
NSN 6110-01-449-1988
NSN 5960-00-275-7497
NSN 6105-01-648-4338
NSN 5950-01-155-1303