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Alumina Vent Plugs

Metsch vent plugs are hard ceramic products used to plug wax vent holes molded on complex wax pattern assemblies to assist with the de-wax of the mold. Metsch vent plugs are designed with tapered sides to prevent pushing the plug through the vent hole into the de-waxed mold. All Metsch vent plugs have radius on edges to avoid emitting ceramic inclusions into the pour. The Metsch vent plug product line includes 3 sizes: small, medium and large. Thousand Series line of vent plugs is available without a tooling charge. Custom vent plug shapes can be designed and molded to form fit to your wax vent shape.

MRI 217 Product Features

  1. High operating temperature capable
  2. High mechanical strength
  3. Ultra smooth surface finish
  4. Suitable for DS/SX casting processes with customerverification/qualification prior to production release


Types and sizes

Consideration of the optimal vent plug solution will first be given to the Thousand Series line of vent plugs which is available without a tooling charge. If a Thousand Series model does not meet your requirement, we will assist with the design/build of the custom vent plug shape for your mold and pouring requirements.




See what we can do for you

Whether a model from our Thousand Series line or a custom design product, contact us. Together we’ll come up with the perfect solution.