... d=6mm, c=12mm, Le=200mm, Lu=180mm, a=30mmPlease specify as: dia6/12x200x180x30mm (dia d/cxLexLuxa mm ... types MoSi2 heating elements, one is M1700 type, which ensure max. furnace temperature 1650C; another ... . When you place order, please choose suitable type according to your furnace working temperature. M1700 (heat furnace ... , dia4/9, dia6/12, dia9/18, dia12/24M1800 type (d/c): dia3/6, dia4/9, dia6/12, ...