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Vacuum Pressure Impregnation (VPI)

Vacuum pressure impregnation is used to seal micro and macro porosity in castings. Ferrous and non ferrous metals such as aluminum, steel, copper, iron, brass, bronze, magnesium, powdered metal, and other rigid porous materials can benefit from this process. Powdered metal items will encounter less chatter during machining, which will increase tool life. Impregnation is commonly used for items that must retain gases or fluids under pressure. Our resin is NSF approved, and rated to withstand temperatures from -50 to 400° F.

Depiction of porosity in cross-section of casting:

Typical and proven applications of VPI:

Our process meets or exceeds major industry standards, including Mil Spec 17563C. Any special information pertaining to your needs will be furnished upon request.


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