Ford Master Cylinder Gasket/Bladder Spacer

I have a 1977 Ford F-150 4x4, I have put 3 brake master cylinders on it. The last 2 have leaked. This spacer should go under the cap and lay on the gasket/bladder not against the master cylinder. PETG is stable with DOT3 brake fluid.(see chart attachment) The only trick to printing with PETG is to double your gap between the nozzle and bed. If you use one sheet of paper for PLA use 2 for PETG.

Update: 6-8-2018 This spacer cured my weeping mastercyclinder the outside is now bone dry.