Review on Raybestos MC36468 Professional Master Cylinder by Lequon Kaneshiro

This M/C was fitted to a rarely used car and fitted according to the instructions. A few months later the pedal fell to the floor. Upon inspection, the large rubber seal of the lid was deformed and blistered, so the seal could not be held. Checking m/c on the stand revealed that the seals on the piston allow the fluid to bypass and it doesn't create pressure hence the pedal to the floor. Now I can't return it like a parts store so I lost $40.