Yasui Vacuum Wax Injector Inside Chamber Upper O-Ring

This 115 diameter O-ring is located within the internal vacuum manifold system of the Yasui VWI series. It is designed to facilitate a rapid and complete air evacuation from the mold chamber before wax is injected. Because it is exposed to constant pressure fluctuations, it is made from a resilient elastomer that resists deformation. Replacing this 115, diameter ring is a standard maintenance step to keep your digital injector running at peak efficiency.