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 6110-01-368-7837
NSN 5996-00-051-6667
NSN 5985-01-050-6789
NSN 5990-01-476-0722
NSN 5835-00-958-6231
NSN 5895-01-276-3960
NSN 5950-01-432-4997
NSN 5935-01-426-4032
NSN 6130-00-736-4382
NSN 5999-00-910-4302
NSN 5895-01-538-4385
NSN 5920-01-554-4932