How It Works Slick-Pak includes water thickeners and lubricants that coat surfaces as it moves through pipes and hoses. This lubrication ensures that the concrete following the Slick-Pak retains water and can easily move through the pipes. Don't Forget Your Cleanout Balls ORIGINAL SLICK-PAK CONCRETE PUMP PRIMER High-Viscosity Pump Primer & Pump Aid Use Slick-Pak to improve performance, efficiency, and durability of your pump while reducing the likelihood of costly repairs. Reduce wear and tear on your equipment investment by lowering line pressure, reduce the risk of plugs, and improve jobsite safety. (60) Easy to Handle 8oz Water-Soluble Bag Increase Ease and Range of Pumpability Decrease Equipment Wear Reduce Friction and Line Pressure Improve Safety Cost-Effective Meets ASTM C494 Type S Requirements Made in USA MADE WITHOUT CORROSIVE MATERIALS Slick-Pak does not contain calcium chloride, nitrates, or other potentially corrosive materials.