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 6105-01-197-7687
NSN 6150-01-332-5586
NSN 5835-00-198-4936
NSN 6135-01-542-5902
NSN 5915-01-096-7822
NSN 6650-01-532-4213
NSN 5999-01-173-3179
NSN 5998-00-044-3995
NSN 5910-01-089-9785
NSN 5945-01-554-8608
NSN 5985-01-268-1359
NSN 2925-00-936-9344