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 5925-01-534-9760
NSN 5998-00-111-1122
NSN 5910-00-686-7770
NSN 6240-01-240-7529
NSN 5960-01-573-6483
NSN 5998-00-884-6254
NSN 5996-00-392-7626
NSN 6150-01-467-1590
NSN 5965-00-161-1512
NSN 5990-00-186-2445
NSN 6105-01-044-0193
NSN 6220-01-009-1688