l, Polypropylene Body Material, Polypropylene Check Seat Material, PTFE Diaphragm Material, Self Priming Dry 15 Ft, Self Priming Wet 28 FtPolypropyleneNonmetallic Air-Operated Double Diaphragm PumpsHousing MaterialsHighly resistant to many caustics and a wide variety of nonaggressive water-based liquids.Easily pump slurries, solvents, and high-viscosity liquids such as paints and waste oils.