Flexible Electric Heating Strips of Silicone Rubber Heating Element. Flexible silicone heating belt for industrial use. Electric Heating Pad/Mat Silicone Rubber Heater. Custom Made Electric Heating Element With Temperature Control. Silicone rubber heating elements have two material, nickel chrome heating wire and etching foil. Both types are heating fast and high thermal conversion efficiency. Packed in PP Bag + Carton Box.