SM35 low voltage insulators. top quality and best price. we supplied SM25,SM30,SM35,SM40,SM51,SM76, 1) made of bulk molding compound, unsaturated polymer with fiber surface.2) good properties: electrical resistance, heat resistance, fire resistance, low shrinkage and water resistance. size(mm)size(mm)Tensile strength(LBS)600Voltage withstand(KV)10Screw(mm)Φ8 SM type bus bar insulators