The 2E-NDVR acidic pump consists of an aluminum diecast housing, aluminum seal plate, nylon impeller and volute, stainless steel backplate, and Fluoroelastomer (FKM) gasket. This acidic pump uses a two-seal design. The seals are double-lip radial design type. One is mounted in the aluminum pump housing, the other is in the aluminum seal plate. The exposed motor shaft is made of stainless steel.