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 5910-00-870-2652
NSN 5895-01-333-4941
NSN 5965-01-642-3616
NSN 6220-00-139-1421
NSN 5960-01-148-6908
NSN 4140-01-621-4842
NSN 4140-01-084-9429
NSN 5930-00-182-7617
NSN 6320-00-701-0437
NSN 6620-01-633-8443
NSN 5999-00-171-8858
NSN 6150-00-354-7151