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 4140-01-322-5182
NSN 5999-01-339-1325
NSN 5975-00-830-7638
NSN 5965-01-421-1244
NSN 5835-01-024-9249
NSN 5998-01-615-0424
NSN 6645-00-754-4108
NSN 6135-00-209-6918
NSN 5835-01-571-4083
NSN 5985-01-241-6993
NSN 6320-00-519-0770
NSN 6240-01-186-3273