Silicone tubes: 1,Non-toxic,Environmental protection 2,Under wear and high temperature 4, ... used for automotive applications like windshield washers, heater/coolant hose, vacuum-operated accessories, emission systems, etc.We ... tube as below, (1)Size&Color:could be customized (2)Lightweight, good tear strength (3) Excellent Insulating Property ( ... forward to hearing from you. custom colors silicone hose