About IMPCO

Whether you are an engineer, manufacturer, or DIY’er, we have a Brush-On Sealant that will work for you. Our line of sealants will repair porosity in castings, weldments, brazings, and other ferrous parts.

IMPCO, Inc. is owned by Godfrey & Wing Inc. Godfrey & Wing is the largest vacuum impregnation equipment and sealant manufacturer in the world.

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How It Works

How to Mix Resin

Mix A and B components in container supplied with kit in 1:1 ratio / 50-50% ratio

Why Brush-on Sealants?

Brush-On-Sealants Products

AlumiSeal

Ideal for aluminum casting, weldments, brazings, and other aluminum parts

AlumiSeal™ is a uniquely formulated, 2 part, VOC free Brush-On Sealant™. Its unique chemistry and low dynamic viscosity enable it to wick deeply into pores or seams and between close-fitting aluminum surfaces.

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CastSeal

Ideal for iron and steel castings, brazings, and other ferrous parts

CastSeal™ is a uniquely formulated, 2 part, VOC free Brush-On Sealant™. The very low viscosity provides excellent wetting, and enables CastSeal™ to wick into pores, welds, and seams and between close-fitting iron and steel surfaces.

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WeldSeal

Ideal for iron and steel weldments

WeldSeal™ is a uniquely formulated, 2 part, VOC free Brush-On Sealant™. The very low viscosity provides excellent wetting, and enables WeldSeal™ to wick into pores, welds, and seams and between close-fitting weldment surfaces.

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ImSeal

Ideal for macro-porosity on iron, aluminum, brass, and other metal castings and part

ImSeal™ is a uniquely formulated, 2 part epoxy based macro-porosity sealant. ImSeal™ draws beneath the surface – penetrating and filling porosity deep within the wall thickness of a casting.

It fills all interconnected passageways becoming a permanent indestructible seal and is not affected by subsequent operations.

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Not Sure if Brush-on’s or impregnation is the right choice?