Shaft Sleeve (Figure B.08): Pump shafts are usually protected from
erosion, corrosion, and wear at the seal chambers, leakage joints,
internal bearings, and in the waterways by renewable sleeves. Unless
otherwise specified, a shaft sleeve of wear, corrosion, and erosionresistant
material shall be provided to protect the shaft. The sleeve
shall be sealed at one end. The shaft sleeve assembly shall extend
beyond the outer face of the seal gland plate. (Leakage between the
shaft and the sleeve should not be confused with leakage through the
mechanical seal).