Up for sale is a new O-ring for a Berkeley jet pump hand hole cover. This O-ring fits the cover that says " Berkeley Jet-Drive on the cover that you see in the pictures and has squared edges. The Berkeley part number S13734.
Berkeley jet pump hand hole clean out cover Part Number: M-4160
Berkeley Jet Pump Hand Hole Cover with O-ring M-4128 M4128 Square Style
Berkeley Jet Pump Hand Hole Cover with O-ring M-4128 M4128 Euro Style
Berkeley Jet Pump hand hole cover seal O-ring S13734 larger *
Berkeley jet pump gasket set intake bowl nozzle Berkeley steering seal
Berkeley Jet Pump 05775 Cooling Water Pipe, 3/8" NPT for Berkeley 12JE & 12JF