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 6150-01-218-4974
NSN 5915-00-249-8092
NSN 6105-01-437-8875
NSN 5950-01-420-2783
NSN 6320-01-592-6248
NSN 5835-01-629-2044
NSN 2925-01-090-2391
NSN 6220-00-174-8514
NSN 6610-00-596-9883
NSN 5999-01-065-0500
NSN 5999-01-169-5103
NSN 4140-01-541-0303