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 6645-01-089-6459
NSN 5998-01-070-4452
NSN 5910-00-962-8526
NSN 5999-01-184-6901
NSN 6110-00-914-2420
NSN 5855-00-281-3843
NSN 6320-01-470-6826
NSN 5960-00-004-4979
NSN 6105-00-075-2487
NSN 5985-00-301-3814
NSN 5930-01-244-6476
NSN 5925-00-222-6199