SULZER Pump Parts High Precision Stainless Steel Casting Volume Casing Cover

Our brand was established to deliver integrated technical solutions in the fluid machinery and engineering sectors. Backed by a complete portfolio of specialized technologies and product lines, we offer clients expert technical consultation, commercial support, and bundled product solutions — from pumps and frequency converters to servo drives, PLC-HMI, industrial control cabinets, motors, mechanical seals and assemblies, couplings, gearboxes, and full-cycle engineering services (overseas on-site 3D scanning reverse molding of pump replacement parts and field equipment debugging by our dispatched engineers internationally).

SULZER Pump Casing Cover (also called casing cover, front cover, rear cover, or volute cover) is the stationary pressure boundary component that closes the pump casing on the shaft side. Mounted opposite the volute casing, the casing cover forms the complete pressure chamber and provides the sealing surface for the mechanical seal or packing gland. It houses the shaft penetration and typically includes the seal chamber, bearing housing interface, and connections for flush and drain lines.

The casing cover must withstand the full pump operating pressure, accommodate the rotating shaft with close clearance at the seal area, and resist erosion from high-velocity fluid that may leak past the wear rings. Common failure modes include seal chamber bore wear (from seal replacement cycles), flange face corrosion, stress cracking from pressure cycling, and erosion at the tongue or cutwater area adjacent to the impeller discharge.

Our SULZER replacement casing covers are reverse-engineered using FARO 3D laser scanning to capture the seal chamber bore, flange bolt pattern, and internal hydraulic profile. Produced to exact OEM dimensions with full pressure test certification.