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Brush-on Polymer Seals Porosity in Welds

Brush-on Polymer Seals Porosity in Welds

Impco Inc.'s WeldSeal is a high-performance brush-on methacrylate compound formulated for sealing porosity in welds that will contain gases under pressure or liquids. WeldSeal's low dynamic viscosity enables it to wick deeply into pores, seams and between close-fitting ferrous metal surfaces. After WeldSeal has cured in the porosity or voids, excess material on the surface is rinsed away with water, leaving the surface clean and ready for painting or other operations. WeldSeal does not alter critical surface dimensions.

WeldSealcomes packaged in a 250ml kit with a shelf life of 6-12 months. Mixing the sealant's two components creates a VOC-free, low-viscosity, pale blue liquid that can be easily applied by brush. Once mixed, WeldSeal has an extended pot life of about one day, allowing multiple parts to be treated from the same kit. Drawing a vacuum improves penetration. WeldSeal's unique chemistry allows cleanup of parts, tools and brushes with water - no detergents or solvents are required. Cured WeldSeal forms a pressure-tight mass that withstands continuous service temperatures of up to 179C (355F). Parts treated with WeldSeal have been tested leak-free at over 150psi. Cured WeldSeal has a typical hardness of 95 Shore D (ASTM D2240) and exhibits resistance to a broad range of chemicals, including oils, glycol, chlorinated and fluorinated solvents, mild caustics, acid solutions and water.

Brush-on Polymer Seals Porosity in Welds
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