I/P® tubing sizes I/P® sizes I/P® 26, I/P® 73, I/P® 82, I/P® 70 and I/P® 89 offer excellent pressure generation, suction lift, tubing life, and the ability to pump viscous fluids—all at higher flow rates. This tubing is ideal for industrial applications that require flow rates up to 17 LPM (4.5 GPM). The graph below shows average tubing life while pumping water through a Standard pump head at 21°C (70°F). For example, using this graph it can be determined that the expected average life of Masterflex® I/P® 73 silicone tubing at 300 rpm is about 200 hours.