... Dosing Pump 1,Highly nonreactive,oxide acid-caustic, 2,Tiny thermal expansion. 3,Crystal structure displays MaterialPharma-APharma-ZThermal Expansion810Thermal Conductivity352.93Hardness1813Bending ... with tiny force of friction and less pharmacon residue. Tiny thermal expansion ----- minor piston gap, capable of continuous aneroid running, high perfusion ...