Pentek® XE Series submersible 4" high-thrust motors are built with the latest design, manufacturing and testing technology. They feature laser-welded 304L Stainless Steel construction, higher thrust capacities, and higher efficiencies. These motors incorporate "encapsulated, epoxy stator design," and professional grade Class F insulation provides longer life in harsh environments. Each motor is 100% factory pressure and run tested to support our quality standards.