... a core line, in its outer layer of the heating line with silicone coated / PVC insulation layer . Outer dia. :φ1. ... PVC: 180/90 Applications: refrigerators, air conditioning, refrigerator defrost heating, electric cooker insulation, electric blanket, electric seat, electric massage ... pool, Footbathtub, pipeline tank body heat antifreeze, window heating ect.Note:This picture is just for reference , can ...