Nickel 200 Grade A Annealed Commercially Pure (99 percent) Capillary Tubing provides a heavy wall and relatively small inside diameter frequently required for transmission of pressure changes over great distances by means of gas or liquid, especially in the instrument and control fields and other high pressure applications. Tolerance: O.D. +0.002 / - 0.000 inches, I.D. +/-0.001 inches. It maintains much of its strength at high temperatures and stays tough and ductile at low temperatures with excellent resistance to many corrosive environments. Nickel 200 is normally limited to service at temperatures below 600 F (315 C).