The positive can be produced either by direct modeling in wax over a prepared core (direct lost-wax casting), or by casting in a piece mold or flexiblemold taken from a master cast.
Mold structure is flexible and conveniently load and unload.
模具结构灵活，装卸方便。
3
Flexible graphite packing rings are made of flexible graphite belt or braided graphite packings which are processed by pressing with mold to form rings in various sizes.