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 7035-01-123-8723
NSN 6220-01-325-6645
NSN 5996-00-737-8601
NSN 6650-01-305-0027
NSN 5999-01-646-7335
NSN 5950-00-368-7182
NSN 6150-00-170-4039
NSN 5930-01-488-6687
NSN 5920-01-645-1109
NSN 6645-01-490-0325
NSN 6620-01-345-9488
NSN 5950-01-607-8025