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 6130-00-395-7220
NSN 5950-00-537-3385
NSN 5998-01-262-3363
NSN 5996-01-633-7979
NSN 6220-00-562-5964
NSN 5999-00-401-6788
NSN 5999-00-343-6770
NSN 2925-00-574-3883
NSN 6105-01-388-8079
NSN 7035-01-119-6271
NSN 7035-00-494-9158
NSN 5975-01-486-1882