This utility model relates to the field of hatch cover technology and discloses a marine sealing hatch cover. Because the extended
enclosure is welded to the outer surface of the cover plate, it can prevent liquid from flowing directly to the hatch opening. Furthermore, because the guide plate is welded to the upper surface of the extended
enclosure and tilted away from the center of the cover plate, when rainwater,
seawater, or other liquids fall onto the cover plate, the guide plate can further guide the liquid away, reducing liquid accumulation. Simultaneously, because the
nitrile rubber strip is fixed to the inner edge of the cover plate through a
vulcanization process, it will not fall off during long-term use. Moreover, when the cover plate is closed, one side of the
nitrile rubber strip contacts and is compressed against the upper surface of the mounting frame, undergoing elastic deformation, thus tightly adhering to the upper surface of the mounting frame and effectively preventing liquid from seeping from the contact surface between the cover plate and the mounting frame. Furthermore, because the
nitrile rubber strip is L-shaped, its bottom fits into the groove on the annular sealing edge, further increasing the sealing performance.