The Hex Socket Head Plug securely seals threaded ports on the auxiliary seawater pump housing, preventing coolant leakage and contamination. It withstands harsh marine environments and high-pressure coolant systems. The hexagonal socket head allows for easy installation and removal using an Allen wrench, ensuring a tight, leak-proof seal. Maintaining the integrity of the pump housing helps ensure efficient cooling system operation in marine applications.Attributes:• Features a hexagonal socket head for easy installation and removal.• Precision threads ensure a secure and leak-proof fit.• Secure fit prevents loosening due to engine or pump vibrations.Applications: The Hex Socket Head Plug is used in the auxiliary seawater pump housing of marine engines, located in threaded ports on the pump housing, sealing unused or service openings.