Profile: Hi-Tek Products Ltd. supplies plugs, Our 1300 Series silicon rubber is made from high grade silicone suitable for higher temperatures used in powder coating, and for most electroplating and anodizing electrolytes. It contains chemical resistance in anodizing, etching, E-coating systems, chrome plating, conversion coating, and electroless nickel plating. Its maximum operating temperature is 260° C. It is suitable for stove painting to this maximum temperature. It is re-usable without leaving carbon deposits.