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. Read the following four steps to learn how porosity can be sealed through the vacuum impregnation process.
In the recovery station (also known as drain station, centrifuge) excess sealant is recovered for reuse.
In the cure station (also known as standing, rolling cure or pump over station) the sealant, impregnated into the walls of the part, is polymerized in the leak path.
As shown in purple, the porosity is fully sealed without changing dimensional or functional characteristics.