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 5998-01-579-1666
NSN 6135-01-503-1688
NSN 5975-00-594-8857
NSN 5960-01-624-1170
NSN 5960-00-083-1457
NSN 5999-01-074-9084
NSN 5925-01-537-0409
NSN 6135-01-255-9129
NSN 5835-00-998-5757
NSN 6150-00-251-7608
NSN 6320-01-287-0540
NSN 6610-00-958-0294