Aeroflow designs and manufactures premium quality silicone hose for the Performance Automotive Industry, Transport Industry and Industrial applications. Whether it's silicone heater hose, vacuum or high temperature silicone turbo hose, Aeroflow has the right products for your demanding applications.4 plyWorking temperature -60 degrees C to 180 degrees C ( -75 degrees F to 350 degrees F)Excellent ply adhesion from the inner core to the outer layers Weather resistance to: harsh sunlight, dry conditions and rain water Great retail packaging for easy display and product protection Not recommended for use with oil and fuel Note: Leg sizes are approximate and may vary.