I bought a 22 foot round by 52 inch high pool with pump 633T from local Walmart. The pump was missing a clamp/retainer and black round O-ring under the bottom of the pump. When the water was turned on at the pool to circulate through the pump and filter the pump/filter started leaking really really bad under the bottom. These parts cannot be purchased from Intex at all. I was told by intex the pump would probably be useless or trash since it cannot be sent back due to me not having my receipt. This pump is brand-new and has never been used. I see that this company has major issues with their pump and filter systems by researching on the web.