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 6650-00-486-7924
NSN 6320-01-607-1491
NSN 5985-01-513-6656
NSN 5990-01-501-5409
NSN 6645-01-400-2119
NSN 6145-00-495-7391
NSN 5998-00-987-9875
NSN 5998-00-106-7674
NSN 6145-00-789-7736
NSN 6650-00-331-2232
NSN 2925-01-462-1620
NSN 6150-01-620-7767