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 6110-01-535-2791
NSN 6645-01-240-5499
NSN 6320-00-831-2227
NSN 5835-01-485-0210
NSN 6150-01-284-6531
NSN 5920-00-960-7614
NSN 5999-01-126-7014
NSN 6105-00-035-4909
NSN 6320-01-607-1491
NSN 6240-01-034-9457
NSN 7035-00-116-1900
NSN 6650-00-583-1735