Home Depot / JCW
I repaired mine this winter with parts from Home Depot. In addition to the o-ring, I had to replace the fitting connecting the pump to the water line. The total cost was under $5. A earlier posting on this topic referred to a replacement fauced in the RV section of the JC Whitney catalog. It looks like an exact replacement and less than $30. It would have been my choice had I not found what I needed at HD. Good Luck.
