A manufacturer of high-end vacuum valves and gages asked Custom Rubber Corp. to take over some existing tooling because their supplier at the time couldn't make good parts. The molds were not well cared for, but Custom Rubber was able to economically repair the obvious damage and run quality parts.
This part has very little rubber on it, but what is there has to be molded exactly and without crushing the fragile aluminum insert. The thin aluminum ring is sandwiched in the center of the mold and two rubber rings are bonded to each side as shown in the photo. The rubber is transfer molded from both the top and the bottom of the mold.
The rubber parts pictured are not in stock or for sale. These are examples of custom-manufactured products that illustrate Custom Rubber Corp.'s capabilities.