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 5905-01-278-9000
NSN 2925-01-492-5342
NSN 5998-01-062-2281
NSN 6240-01-106-6113
NSN 6105-00-818-9695
NSN 5930-00-336-9401
NSN 6150-01-323-6378
NSN 6685-01-202-7823
NSN 6320-01-441-2438
NSN 5965-01-512-2895
NSN 5895-01-343-9198
NSN 5998-01-526-6527