9 Products Polysulfone Float For water based liquids, with limited use in oils and chemicals. Polypropylene Float (Hollow) Features a low specific gravity float offering broad chemical compatibility. Polypropylene Float (Solid) With Polypropylene stem and float, switch offers broad chemical compatibility. Buna N Float Ideal for oils and fuels. All PVDF Float Stem and float of corrosionresistant PVDF for ultra-pure applications. Float With Slosh Shield Compact, all-polypropylene switch with slosh shield is ideal for use with turbulent liquids in small tanks. FDA compliant materials. Bottle Level For external mounting on tanks too small to accommodate internally mounted switches. For Low Level For detecting levels as low as 5/8? from tank bottom. Use in water, some oils and chemicals. 3/4" Floats for Tiny Tanks 3/4" Diameter Floats for Tiny Tanks