Molded Rubber Automatic Drain Plug


  • Molded Rubber Automatic Drain Plug Ref: 999PDP

    CR Marine's rubber molded "automatic drain plug" has improved on the old Tempo material but kept the proven design.  It is uniquely engineered to provide efficient drainage of a boat's hull. This four-part rubber product's defining feature is its unique duck bill flapper valve, which automatically drains water when the boat is underway but stops water from coming into the hull all the time.

    When inserted in the transom drain hole of a boat, the custom molded rubber plug will provide a water-tight seal as the boat slows or stops and when the pressure outside the hull against the flapper valve is greater than the pressure of water inside the hull.

    The CR Marine automatic drain plug can be used with ease; It is removable, has no screws and is easy to check and clean.  Fits all standard 1" diameter drains on transoms up to 2-1/4" thick.

    Automatic Drain Plug Instructions (1.3MB PDF)

    Click here to view warranty information