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 5905-00-959-5781
NSN 5975-01-099-5818
NSN 6320-01-155-8295
NSN 5935-01-359-8827
NSN 6620-01-302-3549
NSN 5835-01-597-4820
NSN 6320-00-701-0437
NSN 6220-01-411-6919
NSN 4140-01-337-9421
NSN 5945-00-716-1888
NSN 6105-01-219-0104
NSN 6130-01-449-2738