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 5925-01-388-3325
NSN 5895-00-072-2467
NSN 5930-01-039-8142
NSN 6620-01-401-5356
NSN 6620-00-062-4746
NSN 6645-00-909-2143
NSN 6130-01-058-2642
NSN 5915-01-288-0432
NSN 5835-01-167-1824
NSN 5930-01-188-2683
NSN 5990-01-630-5094
NSN 5915-01-008-0277