... rubble, mud and other transportation arragements absorption. Shield Machine Hose Structure:Wear rubber inner layers: black, smooth, (wear layer thickness of ... : black, smooth (surface gyrosing clear synthetic rubber) anti-aging, ozone resistance.Appications:The shield machine hose is suitable for slurry shield ... to 15bar pressure, swelling, and 10%, temperature range-30c+70c Rubber Shield Machine Hose