with temporary plugs 83 or other equivalent means the vacuum chamber 96 is placed over the terminal assembly 86 with o ring type temporary assembly perimeter seal 80 plus flange or threaded interfaces 89 to produce a vacuum seal between the terminal assembly 86 and the vacuum chamber 96 the seal admixture comprising at least one polymer and at least one thermal expansion controlling material selected from the group consisting of glass powder ceramic powder glass fibers and graphite fibers is mixed with a higher temperature hardener to form a seal premixture 90 before being delivered to the polymer reservoir 91 a polymer outlet valve 95 leading to the inside of the vacuum chamber 96 controls the flow of the premixture 90 multiple polymer outlet tubes 87 can be used as an option the setup can be mounted on an optional shaker 81 to produce vibration during casting an optional control arm 88 that moves the polymer outlet tube can be incorporated into the vacuum chamber 96 for controlling the polymer distribution the polymer tubing 87 and polymer outlet valve 95 can be reused because without going through a baking process the polymer in the tubing 87 and polymer outlet valve 95 is not hardened after the seal premixture 90 is placed in the terminal the polymer outlet valve 98 is closed subsequently the control valves 99 can alternate the pressure in the vacuum chamber 96 from vacuum 97 to pressure.