H19117-01-30A Casing is an important Wear Parts for Mission 8x6x142500 Supreme Centrifugal Pumps. The Mission 2500 Supreme has a semi-open impeller design that contains wide-tipped vanes and a more tangential circumference of the suction allowing the pump to create a smoother flow pattern when handling abrasive fluids. The 2500 Supreme is available in hard iron, supreme hard iron, and aluminum bronze fluid ends. The pumps can be unitized with electric motors, diesel engines, and hydraulic motors (horizontal, vertical, or close-coupled configuration). Fluid end parts available with Supreme Hard material that has a 400 Brinell hardness. The standard impeller, casing wear pad and stuffing box are Ductile Iron to ensure even wear characteristics. Casing provided with replaceable casing wear pad on 4x3x13 â?? 10x8x14 models. Design Features: Versatile stuffing box Thick, strong, concentric casing with replaceable casing wear pad Casing gasket receded for protection. Replaceable stuffing box cover with dual stuffing box bolts Long-life, no-adjustment mechanical seal available for near zero leakage Replaceable shaft sleeve Solid Frame base Labyrinth seals for maximum bearing protection Duplex angular contact bearings Full pipe diameter entrance for minimum turbulence and maximum efficiency Wide semi-open impeller creates lower axial thrust for improved bearing life All sizes feature the same power end