... degree 3.Shore Durometer: From 30A to 90A Advantages for silicone tube(1). No taste, no toxicity, no contamination ( ... high temperature, aging, radiation, cold, heat,Acid, Chemical(3). Stand wear and tear, anti-sepsis, Soft, arc resistance, corona ... Permeability(5). Extended flexible life and reduced maintenanceDefects for silicone tubeNot suitable for use with concentrated acids and bases, organic ...