Product Introduction: Plug Plug is a general sealing blocking accessory widely used on triplex mud pumps, suction manifolds, dampeners and fluid end assemblies for oil drilling, geological exploration and horizontal directional trenchless construction. It is used to block spare ports, oil drain holes, pressure test openings and unused pipeline interfaces to prevent mud leakage, air intake and oil seepage. Manufactured from high-strength alloy steel through precision turning and thread processing, this plug features high compression resistance and deformation resistance. Standard precision external threads match all standard pump body threaded holes, and the flat sealing end face cooperates with rubber gaskets to achieve reliable tight sealing under long-term fluctuating high pressure. Thickened main body structure can withstand instantaneous hydraulic impact without thread slipping or cracking. The outer surface adopts anti-rust and anti-corrosion treatment, resisting erosion from sand-laden drilling fluid, lubricating oil and chemical additives on open-air construction sites. Multiple specifications of thread sizes are available for different interfaces of mud pump power end and fluid end, with excellent interchangeability. Some styles are equipped with hexagonal spanner structure for fast on-site disassembly, convenient for regular oil draining, internal inspection and pipeline maintenance. It effectively avoids air entering the mud circulation system which causes cavitation and unstable pump pressure, stops mud leakage leading to site pollution and resource waste, and blocks dust, sand and impurities from invading internal precision components. As a universal essential sealing fitting, it ensures tightness, cleanliness and stable operation of the whole mud Pump Unit.