Vacuum Impregnation

Vacuum impregnation is the preferred method to seal porosity in order to prevent fluids or gases from leaking under pressure.


Vacuum impregnation seals porosity and leak paths that form during the casting or molding process. Vacuum impregnation stops casting porosity and allows manufacturers to use parts that would otherwise be scrapped.


Vacuum impregnation seals porosity without impacting the part’s functional, assembly or appearance characteristics. Functional characteristics include the ability for fluids or gasses to flow only where needed in order to enhance in-service performance of the component’s design. Assembly characteristics, which must be maintained, include performance of tapped holes; the integrity of mating and sealing surfaces; the elimination of residual internal contamination in water jackets; sockets; surfaces; and dimensional areas. Appearance characteristics include oxidation and discoloration.


Do More With Less

Industries are increasingly requiring manufacturers to “do more with less”. Vacuum impregnation helps make this possible.


In the automotive industry, engineers are specifying lighter metals and thinner walls in critical components like engine blocks. These same OEMs, meanwhile, have higher performance requirements and lower acceptable leak rates in their castings.


These specifications and tighter requirements result in more parts being rejected and scrapped due to casting porosity. This increases costs, robs capacity and delays production.


With Godfrey & Wing's vacuum impregnation, manufacturers can meet OEM requirements and ensure the quality of their components and the integrity of their bottom line.

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