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 5965-00-172-5103
NSN 5835-00-034-4976
NSN 6135-01-069-2482
NSN 5950-01-105-6700
NSN 5925-00-796-0679
NSN 5990-00-242-2705
NSN 6110-01-517-4995
NSN 6130-00-730-0795
NSN 5895-00-144-8162
NSN 5998-01-341-5582
NSN 6320-01-436-0513
NSN 6150-01-259-7888