This graphite crucible provides great thermal stability! Excellent corrosion resistance, impact resistance, acid resistance and alkali resistance. This high-density graphite crucible has good thermal conductivity properties, it can greatly shorten the melting time and saved energy. The ash of graphite crucible is less than 0.1%, to ensure that the precious metal in the smelting is not contaminated. It can melt gold, silver, platinum, and other precious metals and other alloys with long service life. Highly recommended to be used within an electric furnace or by a propane torch method only! *Please note that this crucible should never be used in a coal furnace.

Specifications: Inner Diameter: 30 mm / Outer Diameter: 40 mm / Inner Height: 35 mm / Outer Height: 40 mm.