Polywater® Prelube 5000™ reduces frictional drag during the blowing of small diameter Fiber Optic microcable into microtube Duct. It increases the length of cable that can be blown in a Single shot. Prelube 5000™ is more concentrated, yet less viscous, than Prelube 2000™ (for blowing conventional Fiber cables). The improved chemistry allows this product to spread further and reduce friction at extremely low coating levels. The lower viscosity allows practical application into the microtubes. Application: The micro Duct tubing must be Pressure tight. Clean and dry the tubing by blowing a tight-fitting foam sponge through the microDuct with high Pressure. If excess water or dirt comes from the microDuct, repeat the process. Trapped water can Block the air flow. Prelube 5000™ is effective at quantities as low as 0.05 mg/cm². Squeeze recommended amount of lubricant from the table into the Duct. Spread lubricant by blowing a foam carrier or sponge through the micro Duct as many times as necessary to avoid puddling at the front of the Duct.