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 5935-00-892-3059
NSN 5835-01-469-6706
NSN 2925-01-212-1040
NSN 6150-01-549-2955
NSN 6130-00-773-3132
NSN 5920-00-083-6858
NSN 5999-01-150-4467
NSN 6105-01-483-1506
NSN 5835-01-481-4204
NSN 6110-01-144-1419
NSN 6320-00-070-4544
NSN 6685-01-411-5969