The PENTEK® XE Series 4" submersible 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. The PENTEK XE Series submersible 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.