The Valve Plug (OEM Part No. 3217988206) is a hydraulic spare part compatible with Epiroc underground mining equipment, including M4C, S10M, M2D, Simba E7C, Boomer XE3C, Boomer 291, Boomer 281, Boltec-MC, Boomer L2D, BOOMER-M2C, S1D, S7D, and T1D New models. Manufactured from high-strength alloy steel, it functions as a hydraulic valve sealing and control component installed in the hydraulic valve block. The valve plug helps maintain hydraulic pressure stability, prevents fluid leakage, and supports reliable hydraulic system operation. Designed for demanding underground mining conditions, this replacement hydraulic component provides excellent durability, stable performance, and long service life for drilling equipment maintenance and repair applications.