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 5999-01-461-2076
NSN 6240-01-339-5100
NSN 6150-00-644-8745
NSN 6320-01-108-5933
NSN 5835-00-924-4268
NSN 5925-00-921-1171
NSN 5835-01-354-0566
NSN 5915-01-013-8995
NSN 7035-00-500-7839
NSN 6620-01-633-8443
NSN 2925-00-408-9829
NSN 2925-01-472-4144