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 6240-01-478-8488
NSN 5999-01-133-6729
NSN 6105-01-446-6527
NSN 6685-01-618-4975
NSN 5915-01-063-7134
NSN 5930-00-259-8951
NSN 7035-00-529-3128
NSN 6610-00-225-9886
NSN 5950-01-410-2925
NSN 5996-01-400-3558
NSN 6110-00-563-3695
NSN 5920-00-391-6252