... heating wire, and the gap part of the tightly filled in crystallization of magnesium oxide with good thermal conductivity and ... boiling, dishwasher and various types of heating appliances, etc. Tecnnical data:Insulation materials: magnesium oxideTube Material: Stainless steel seamless ... 8.5,Φ8,Φ6.5Length:200mm5000mmSurface treatment: a variety of plated nickel, passivation, black, spray.Remark:1. ...