Silicone tubes: 1,Non-toxic,Environmental protection 2,Under wear and high temperature 4,Durable,No deformation ... for automotive applications like windshield washers, heater/coolant hose, vacuum-operated accessories, emission systems, etc. ... customized (2)Lightweight, good tear strength (3) Excellent Insulating Property (4) Buffered, with a variety of springiness ... from you. custom colors silicone hose